xmas2023: initial checkin
This commit is contained in:
Vince Weaver
parent
65091783da
commit
cf30f0e536
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@ -0,0 +1,152 @@
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include ../../Makefile.inc
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DOS33 = ../../utils/dos33fs-utils/dos33
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DOS33_RAW = ../../utils/dos33fs-utils/dos33_raw
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EMPTY_DISK = ../../empty_disk/empty.dsk
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TOKENIZE = ../../utils/asoft_basic-utils/tokenize_asoft
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LINKER_SCRIPTS = ../../linker_scripts/
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all: xmas_2023.dsk
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xmas_2023.dsk: QBOOT QLOAD music.inc qload.inc \
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MUSIC \
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XMAS
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cp $(EMPTY_DISK) xmas_2023.dsk
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$(DOS33_RAW) second_d1.dsk 0 0 QBOOT 0 1
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$(DOS33_RAW) second_d1.dsk 0 2 QBOOT 1 1
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$(DOS33_RAW) second_d1.dsk 0 4 QBOOT 2 1
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$(DOS33_RAW) second_d1.dsk 1 0 QLOAD 0 0
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# $(DOS33_RAW) second_d1.dsk 2 0 MUSIC_INTRO 0 0
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# $(DOS33_RAW) second_d1.dsk 4 0 MUSIC 0 0
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$(DOS33_RAW) second_d1.dsk 12 0 XMAS 0 0
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####
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QBOOT: qboot_sector.o
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ld65 -o QBOOT qboot_sector.o -C $(LINKER_SCRIPTS)/apple2_800.inc
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qboot_sector.o: qboot_sector.s qboot_stage2.s
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ca65 -o qboot_sector.o qboot_sector.s -l qboot_sector.lst
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####
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QLOAD: qload.o
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ld65 -o QLOAD qload.o -C $(LINKER_SCRIPTS)/apple2_1200.inc
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qload.o: zp.inc hardware.inc music.inc qload.s \
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gr_offsets.s \
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wait.s wait_a_bit.s \
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lc_detect.s gr_fast_clear.s \
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text_print.s start.s \
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hgr_table.s gs_interrupt.s \
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zx02_optim.s wait_keypress.s hardware_detect.s \
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pt3_lib_detect_model.s pt3_lib_mockingboard_detect.s \
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pt3_lib_mockingboard_setup.s interrupt_handler.s \
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pt3_lib_mockingboard_patch.s
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ca65 -o qload.o qload.s -l qload.lst
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####
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QLOAD2: qload2.o
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ld65 -o QLOAD2 qload2.o -C $(LINKER_SCRIPTS)/apple2_1200.inc
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qload2.o: qload2.s \
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zp.inc hardware.inc music2.inc \
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gr_offsets.s \
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wait.s wait_a_bit.s \
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lc_detect.s gr_fast_clear.s \
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text_print.s start2.s \
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hardware_detect.s \
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hgr_table.s \
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pt3_lib_detect_model.s pt3_lib_mockingboard_detect.s \
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pt3_lib_mockingboard_setup.s interrupt_handler.s \
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pt3_lib_mockingboard_patch.s
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ca65 -o qload2.o qload2.s -l qload2.lst
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####
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qload.inc: generate_common QLOAD
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./generate_common -a 0x1200 -s load_file qload.lst > qload.inc
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./generate_common -a 0x1200 -s detect_appleii_model qload.lst >> qload.inc
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./generate_common -a 0x1200 -s clear_all qload.lst >> qload.inc
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./generate_common -a 0x1200 -s clear_all_color qload.lst >> qload.inc
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./generate_common -a 0x1200 -s set_normal qload.lst >> qload.inc
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./generate_common -a 0x1200 -s set_inverse qload.lst >> qload.inc
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./generate_common -a 0x1200 -s wait qload.lst >> qload.inc
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./generate_common -a 0x1200 -s wait_a_bit qload.lst >> qload.inc
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./generate_common -a 0x1200 -s move_and_print qload.lst >> qload.inc
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./generate_common -a 0x1200 -s detect_language_card qload.lst >> qload.inc
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./generate_common -a 0x1200 -s mockingboard_detect qload.lst >> qload.inc
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./generate_common -a 0x1200 -s clear_bottom qload.lst >> qload.inc
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./generate_common -a 0x1200 -s clear_bottoms qload.lst >> qload.inc
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./generate_common -a 0x1200 -s clear_screens qload.lst >> qload.inc
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./generate_common -a 0x1200 -s clear_top qload.lst >> qload.inc
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./generate_common -a 0x1200 -s zx02_full_decomp qload.lst >> qload.inc
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./generate_common -a 0x1200 -s zx_src_h qload.lst >> qload.inc
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./generate_common -a 0x1200 -s zx_src_l qload.lst >> qload.inc
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####
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music.inc: generate_common MUSIC
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./generate_common -a 0xd000 -s pt3_init_song music.lst > music.inc
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./generate_common -a 0xd000 -s mockingboard_init music.lst >> music.inc
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./generate_common -a 0xd000 -s reset_ay_both music.lst >> music.inc
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./generate_common -a 0xd000 -s clear_ay_both music.lst >> music.inc
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./generate_common -a 0xd000 -s mockingboard_setup_interrupt music.lst >> music.inc
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./generate_common -a 0xd000 -s mockingboard_disable_interrupt music.lst >> music.inc
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./generate_common -a 0xd000 -s done_pt3_irq_handler music.lst >> music.inc
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./generate_common -a 0xd000 -s PT3_LOC music.lst >> music.inc
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./generate_common -a 0xd000 -s current_pattern_smc music.lst >> music.inc
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./generate_common -a 0xd000 -s pt3_set_pattern music.lst >> music.inc
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./generate_common -a 0xd000 -s mute_ay_both music.lst >> music.inc
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./generate_common -a 0xd000 -s unmute_ay_both music.lst >> music.inc
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./generate_common -a 0xd000 -s interrupt_handler music.lst >> music.inc
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####
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MUSIC: music.o
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ld65 -o MUSIC music.o -C $(LINKER_SCRIPTS)/apple2_d000.inc
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music.o: music.s zp.inc \
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music/Walking_In_The_Air_mA2E.pt3 \
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pt3_lib_core.s \
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pt3_lib_mockingboard_detect.s \
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pt3_lib_mockingboard.inc \
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pt3_lib_init.s \
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pt3_lib_mockingboard_setup.s \
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pt3_lib_irq_handler.s
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ca65 -o music.o music.s -l music.lst
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###
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XMAS: xmas.o
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ld65 -o XMAS xmas.o -C $(LINKER_SCRIPTS)/apple2_8000.inc
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xmas.o: xmas.s \
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zp.inc hardware.inc qload.inc \
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graphics/tree01.gr.zx02
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ca65 -o xmas.o xmas.s -l xmas.lst
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###
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graphics/tree01.gr.zx02:
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cd graphics && make
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###
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generate_common: generate_common.o
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$(CC) $(LFLAGS) -o generate_common generate_common.o
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generate_common.o: generate_common.c
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$(CC) $(CFLAGS) -c generate_common.c
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###
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clean:
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rm -f *~ *.o *.lst QBOOT QLOAD MUSIC XMAS
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rm -f qload.inc music.inc generate_common
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@ -0,0 +1,77 @@
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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static FILE *fff;
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static void find_address(char *symbol_name, int routine_offset) {
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unsigned int addr=0;
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char string[BUFSIZ],*result;
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char temp_name[BUFSIZ];
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strncpy(temp_name,symbol_name,BUFSIZ);
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strncat(temp_name,":",2);
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while(1) {
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result=fgets(string,BUFSIZ,fff);
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if (result==NULL) {
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fprintf(stderr,"Error: %s not found!\n",symbol_name);
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exit(-1);
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}
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result=strstr(string,temp_name);
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if (result!=NULL) {
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string[6]=0;
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sscanf(string,"%x",&addr);
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break;
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}
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}
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printf("%s\t=$%04x\n",symbol_name,addr+routine_offset);
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}
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int main(int argc, char **argv) {
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int c;
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char *filename;
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char symbol[BUFSIZ];
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int routine_offset=0xd000;
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while ( (c=getopt(argc, argv, "a:s:") ) != -1) {
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switch(c) {
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case 'a':
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routine_offset=strtol(optarg, NULL, 0);
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break;
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case 's':
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strncpy(symbol,optarg,BUFSIZ-1);
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break;
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default:
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fprintf(stderr,"Unknown option %c\n",c);
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exit(-1);
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break;
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}
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}
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filename=strdup(argv[optind]);
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fff=fopen(filename,"r");
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if (fff==NULL) {
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fprintf(stderr,"ERROR! could not open %s\n",filename);
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return -1;
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}
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find_address(symbol,routine_offset);
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fclose(fff);
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return 0;
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}
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clear_screens:
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;===================================
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; Clear top/bottom of page 0
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;===================================
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lda #$0
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sta DRAW_PAGE
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jsr clear_top
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jsr clear_bottom
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;===================================
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; Clear top/bottom of page 1
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;===================================
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lda #$4
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sta DRAW_PAGE
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jsr clear_top
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jsr clear_bottom
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rts
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;=========================================================
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; clear_top
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;=========================================================
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; clear DRAW_PAGE
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; original = 14,558 cycles(?) 15ms, 70Hz
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; OPTIMIZED MAX (page0,48rows): 45*120+4+6 = 5410 = 5.4ms 185Hz
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; (pageX,40rows): 50*120+4+6 = 6010 = 6.0ms 166Hz
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; 50*120+4+6+37 = 6055 = 6.0ms 166Hz
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clear_top:
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lda #0 ; 2
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clear_top_a:
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sta COLOR ; 3
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clc ; 2
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lda DRAW_PAGE ; 3
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adc #4 ; 2
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sta __ctf+2 ; 3
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sta __ctf+5 ; 3
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adc #1 ; 2
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sta __ctf+8 ; 3
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sta __ctf+11 ; 3
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adc #1 ; 2
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sta __ctf2+2 ; 3
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sta __ctf2+5 ; 3
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adc #1 ; 2
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sta __ctf2+8 ; 3
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sta __ctf2+11 ; 3
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ldy #120 ; 2
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lda COLOR ; 3
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clear_top_fast_loop:
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__ctf:
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sta $400,Y ; 5
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sta $480,Y ; 5
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sta $500,Y ; 5
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sta $580,Y ; 5
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cpy #80 ; 2
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bpl no_draw_bottom ; 2nt/3
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__ctf2:
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sta $600,Y ; 5
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sta $680,Y ; 5
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sta $700,Y ; 5
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sta $780,Y ; 5
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no_draw_bottom:
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dey ; 2
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bpl clear_top_fast_loop ; 2nt/3
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rts ; 6
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;=========================================================
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; clear_bottom
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;=========================================================
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; clear bottom of draw page
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clear_bottom:
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clc ; 2
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lda DRAW_PAGE ; 3
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adc #6 ; 2
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sta __cbf2+2 ; 3
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sta __cbf2+5 ; 3
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adc #1 ; 2
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sta __cbf2+8 ; 3
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sta __cbf2+11 ; 3
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ldy #120 ; 2
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lda #$a0 ; Normal Space ; 2
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clear_bottom_fast_loop:
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__cbf2:
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sta $600,Y ; 5
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sta $680,Y ; 5
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sta $700,Y ; 5
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sta $780,Y ; 5
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dey ; 2
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cpy #80 ; 2
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bpl clear_bottom_fast_loop ; 2nt/3
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rts ; 6
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;clear_screens_notext:
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;===================================
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; Clear top/bottom of page 0
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;===================================
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; lda #$0
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; sta DRAW_PAGE
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; jsr clear_all
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;===================================
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; Clear top/bottom of page 1
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;===================================
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; lda #$4
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; sta DRAW_PAGE
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; jsr clear_all
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; rts
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clear_bottoms:
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lda DRAW_PAGE
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pha
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;===================================
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; Clear bottom of page 0
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;===================================
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lda #$0
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sta DRAW_PAGE
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jsr clear_bottom
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;===================================
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; Clear bottom of page 1
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;===================================
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lda #$4
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sta DRAW_PAGE
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jsr clear_bottom
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pla
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sta DRAW_PAGE
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rts
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;=========================================================
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; clear_all
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;=========================================================
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; clear 48 rows
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clear_all:
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clc ; 2
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lda DRAW_PAGE ; 3
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adc #4 ; 2
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sta __caf+2 ; 3
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sta __caf+5 ; 3
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adc #1 ; 2
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sta __caf+8 ; 3
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sta __caf+11 ; 3
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adc #1 ; 2
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sta __caf2+2 ; 3
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sta __caf2+5 ; 3
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adc #1 ; 2
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sta __caf2+8 ; 3
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sta __caf2+11 ; 3
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ldy #120 ; 2
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clear_all_color:
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lda #' '|$80 ; 2
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clear_all_fast_loop:
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__caf:
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sta $400,Y ; 5
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sta $480,Y ; 5
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sta $500,Y ; 5
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sta $580,Y ; 5
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__caf2:
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sta $600,Y ; 5
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sta $680,Y ; 5
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sta $700,Y ; 5
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sta $780,Y ; 5
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dey ; 2
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bpl clear_all_fast_loop ; 2nt/3
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rts ; 6
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@ -0,0 +1,5 @@
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gr_offsets:
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.word $400,$480,$500,$580,$600,$680,$700,$780
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.word $428,$4a8,$528,$5a8,$628,$6a8,$728,$7a8
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.word $450,$4d0,$550,$5d0,$650,$6d0,$750,$7d0
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@ -0,0 +1,83 @@
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include ../../../Makefile.inc
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ZX02 = ~/research/6502_compression/zx02.git/build/zx02 -f
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PNG_TO_HGR = ../../../utils/hgr-utils/png2hgr
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PNG2GR = ../../../utils/gr-utils/png2gr
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all: tree01.gr.zx02 tree03.gr.zx02 \
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tree05.gr.zx02 tree07.gr.zx02 \
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tree09.gr.zx02 tree11.gr.zx02 \
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tree13.gr.zx02 tree15.gr.zx02 \
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####
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tree01.gr.zx02: tree01.gr
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$(ZX02) tree01.gr tree01.gr.zx02
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tree01.gr: tree01.png
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$(PNG2GR) tree01.png tree01.gr
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####
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tree03.gr.zx02: tree03.gr
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$(ZX02) tree03.gr tree03.gr.zx02
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tree03.gr: tree03.png
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$(PNG2GR) tree03.png tree03.gr
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####
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tree05.gr.zx02: tree05.gr
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$(ZX02) tree05.gr tree05.gr.zx02
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tree05.gr: tree05.png
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$(PNG2GR) tree05.png tree05.gr
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####
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tree07.gr.zx02: tree07.gr
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$(ZX02) tree07.gr tree07.gr.zx02
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tree07.gr: tree07.png
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$(PNG2GR) tree07.png tree07.gr
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####
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tree09.gr.zx02: tree09.gr
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$(ZX02) tree09.gr tree09.gr.zx02
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tree09.gr: tree09.png
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$(PNG2GR) tree09.png tree09.gr
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####
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tree11.gr.zx02: tree11.gr
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$(ZX02) tree11.gr tree11.gr.zx02
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tree11.gr: tree11.png
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$(PNG2GR) tree11.png tree11.gr
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|
||||
|
||||
####
|
||||
|
||||
tree13.gr.zx02: tree13.gr
|
||||
$(ZX02) tree13.gr tree13.gr.zx02
|
||||
|
||||
tree13.gr: tree13.png
|
||||
$(PNG2GR) tree13.png tree13.gr
|
||||
|
||||
####
|
||||
|
||||
tree15.gr.zx02: tree15.gr
|
||||
$(ZX02) tree15.gr tree15.gr.zx02
|
||||
|
||||
tree15.gr: tree15.png
|
||||
$(PNG2GR) tree15.png tree15.gr
|
||||
|
||||
####
|
||||
|
||||
clean:
|
||||
rm -f *~ *.zx02
|
||||
Binary file not shown.
|
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Binary file not shown.
|
After Width: | Height: | Size: 7.3 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 7.2 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 7.0 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 6.9 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 7.3 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 7.3 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 7.1 KiB |
|
|
@ -0,0 +1,9 @@
|
|||
|
||||
gs_interrupt_handler:
|
||||
; swap back in language card
|
||||
|
||||
; read/write RAM, use $d000 bank1
|
||||
bit $C083
|
||||
bit $C083
|
||||
|
||||
jmp interrupt_handler
|
||||
|
|
@ -0,0 +1,101 @@
|
|||
; HARDWARE LOCATIONS
|
||||
|
||||
KEYPRESS = $C000
|
||||
KEYRESET = $C010
|
||||
|
||||
; SOFT SWITCHES
|
||||
CLR80COL = $C000 ; PAGE1/PAGE1 normal
|
||||
SET80COL = $C001 ; PAGE1/PAGE2 switches PAGE1 in Aux instead
|
||||
EIGHTYCOLOFF = $C00C
|
||||
EIGHTYCOLON = $C00D
|
||||
TBCOLOR = $C022 ; IIgs text fg/bg colors
|
||||
NEWVIDEO = $C029 ; IIgs graphics modes
|
||||
SPEAKER = $C030
|
||||
CLOCKCTL = $C034 ; bits 0-3 are IIgs border color
|
||||
CYAREG = $C036 ; iigs motor detect and clock speed
|
||||
SET_GR = $C050
|
||||
SET_TEXT = $C051
|
||||
FULLGR = $C052
|
||||
TEXTGR = $C053
|
||||
PAGE1 = $C054
|
||||
PAGE2 = $C055
|
||||
LORES = $C056 ; Enable LORES graphics
|
||||
HIRES = $C057 ; Enable HIRES graphics
|
||||
AN3 = $C05E ; Annunciator 3
|
||||
|
||||
PADDLE_BUTTON0 = $C061
|
||||
PADDL0 = $C064
|
||||
PTRIG = $C070
|
||||
|
||||
; APPLESOFT BASIC ROUTINES
|
||||
|
||||
NORMAL = $F273
|
||||
HGR2 = $F3D8
|
||||
HGR = $F3E2
|
||||
BKGND0 = $F3F4 ; clear current page to A
|
||||
HPOSN = $F411 ; (Y,X),(A) (values stores in HGRX,XH,Y)
|
||||
HPLOT0 = $F457 ; plot at (Y,X), (A)
|
||||
COLOR_SHIFT = $F47E
|
||||
HLINRL = $F530 ; (X,A),(Y)
|
||||
HGLIN = $F53A ; line to (X,A),(Y)
|
||||
COLORTBL = $F6F6
|
||||
|
||||
; MONITOR ROUTINES
|
||||
|
||||
HLINE = $F819 ; HLINE Y,$2C at A
|
||||
VLINE = $F828 ; VLINE A,$2D at Y
|
||||
CLRSCR = $F832 ; Clear low-res screen
|
||||
CLRTOP = $F836 ; clear only top of low-res screen
|
||||
SETCOL = $F864 ; COLOR=A
|
||||
ROM_TEXT2COPY = $F962 ; iigs
|
||||
TEXT = $FB36
|
||||
TABV = $FB5B ; VTAB to A
|
||||
ROM_MACHINEID = $FBB3 ; iigs
|
||||
BASCALC = $FBC1 ;
|
||||
BELL = $FBDD ; ring the bell
|
||||
VTAB = $FC22 ; VTAB to CV
|
||||
HOME = $FC58 ; Clear the text screen
|
||||
WAIT = $FCA8 ; delay 1/2(26+27A+5A^2) us
|
||||
SETINV = $FE80 ; INVERSE
|
||||
SETNORM = $FE84 ; NORMAL
|
||||
COUT = $FDED ; output A to screen
|
||||
COUT1 = $FDF0 ; output A to screen
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
COLOR_BLACK = 0
|
||||
COLOR_RED = 1
|
||||
COLOR_DARKBLUE = 2
|
||||
COLOR_PURPLE = 3
|
||||
COLOR_DARKGREEN = 4
|
||||
COLOR_GREY = 5
|
||||
COLOR_MEDIUMBLUE = 6
|
||||
COLOR_LIGHTBLUE = 7
|
||||
COLOR_BROWN = 8
|
||||
COLOR_ORANGE = 9
|
||||
COLOR_GREY2 = 10
|
||||
COLOR_PINK = 11
|
||||
COLOR_LIGHTGREEN = 12
|
||||
COLOR_YELLOW = 13
|
||||
COLOR_AQUA = 14
|
||||
COLOR_WHITE = 15
|
||||
|
||||
COLOR_BOTH_BLACK = $00
|
||||
COLOR_BOTH_RED = $11
|
||||
COLOR_BOTH_DARKBLUE = $22
|
||||
COLOR_BOTH_DARKGREEN = $44
|
||||
COLOR_BOTH_GREY = $55
|
||||
COLOR_BOTH_MEDIUMBLUE = $66
|
||||
COLOR_BOTH_LIGHTBLUE = $77
|
||||
COLOR_BOTH_BROWN = $88
|
||||
COLOR_BOTH_ORANGE = $99
|
||||
COLOR_BOTH_PINK = $BB
|
||||
COLOR_BOTH_LIGHTGREEN = $CC
|
||||
COLOR_BOTH_YELLOW = $DD
|
||||
COLOR_BOTH_AQUA = $EE
|
||||
COLOR_BOTH_WHITE = $FF
|
||||
|
||||
|
|
@ -0,0 +1,80 @@
|
|||
;====================
|
||||
; Hardware Detect
|
||||
; called for disk1 and disk2
|
||||
|
||||
; simplified version that just detects model and mockingboard
|
||||
; for the fake BIOS we do a bit more, but we do rely
|
||||
; on this being run first
|
||||
|
||||
hardware_detect:
|
||||
|
||||
;=======================
|
||||
; Hardware Detect Model
|
||||
;=======================
|
||||
; Yes Michaelangel007 I will eventually update linux_logo 6502
|
||||
|
||||
jsr detect_appleii_model
|
||||
|
||||
lda APPLEII_MODEL
|
||||
cmp #'g'
|
||||
bne not_iigs
|
||||
|
||||
is_a_iigs:
|
||||
|
||||
; enable 1MHz mode
|
||||
; see hw.accel.a in 4cade
|
||||
setspeed:
|
||||
lda CYAREG
|
||||
and #$7f
|
||||
sta CYAREG
|
||||
|
||||
; gr/text page2 handling broken on early IIgs models
|
||||
; this enables the workaround
|
||||
|
||||
jsr ROM_TEXT2COPY ; set alternate display mode on IIgs
|
||||
|
||||
|
||||
; set background color to black instead of blue
|
||||
lda NEWVIDEO
|
||||
and #%00011111 ; bit 7 = 0 -> IIgs Apple II-compat video modes
|
||||
; bit 6 = 0 -> IIgs 128K memory map same as IIe
|
||||
; bit 5 = 0 -> IIgs DHGR is color, not mono
|
||||
; bits 0-4 unchanged
|
||||
sta NEWVIDEO
|
||||
lda #$F0
|
||||
sta TBCOLOR ; white text on black background
|
||||
lda #$00
|
||||
sta CLOCKCTL ; black border
|
||||
sta CLOCKCTL ; set twice for VidHD
|
||||
|
||||
; gs always swaps in RAM
|
||||
lda #<gs_interrupt_handler
|
||||
sta $3FE
|
||||
lda #>gs_interrupt_handler
|
||||
sta $3FF
|
||||
|
||||
not_iigs:
|
||||
|
||||
|
||||
;======================
|
||||
; detect mockingboard
|
||||
|
||||
lda #0
|
||||
sta SOUND_STATUS
|
||||
|
||||
;PT3_ENABLE_APPLE_IIC = 1 ; we set this earlier
|
||||
|
||||
jsr mockingboard_detect
|
||||
bcc mockingboard_notfound
|
||||
|
||||
mockingboard_found:
|
||||
|
||||
lda SOUND_STATUS
|
||||
ora #SOUND_MOCKINGBOARD
|
||||
sta SOUND_STATUS
|
||||
|
||||
mockingboard_notfound:
|
||||
|
||||
rts
|
||||
|
||||
.include "pt3_lib_mockingboard.inc"
|
||||
|
|
@ -0,0 +1,97 @@
|
|||
;div7_table = $b800
|
||||
;mod7_table = $b900
|
||||
;hposn_high = $ba00
|
||||
;hposn_low = $bb00
|
||||
|
||||
|
||||
hgr_make_tables:
|
||||
|
||||
;=====================
|
||||
; make /7 %7 tables
|
||||
;=====================
|
||||
|
||||
hgr_make_7_tables:
|
||||
|
||||
ldy #0
|
||||
lda #0
|
||||
ldx #0
|
||||
div7_loop:
|
||||
sta div7_table,Y
|
||||
|
||||
inx
|
||||
cpx #7
|
||||
bne div7_not7
|
||||
|
||||
clc
|
||||
adc #1
|
||||
ldx #0
|
||||
div7_not7:
|
||||
iny
|
||||
bne div7_loop
|
||||
|
||||
|
||||
ldy #0
|
||||
lda #0
|
||||
mod7_loop:
|
||||
sta mod7_table,Y
|
||||
clc
|
||||
adc #1
|
||||
cmp #7
|
||||
bne mod7_not7
|
||||
lda #0
|
||||
mod7_not7:
|
||||
iny
|
||||
bne mod7_loop
|
||||
|
||||
|
||||
; Hposn table
|
||||
|
||||
; hposn_low, hposn_high will each be filled with $C0 bytes
|
||||
; based on routine by John Brooks
|
||||
; posted on comp.sys.apple2 on 2018-07-11
|
||||
; https://groups.google.com/d/msg/comp.sys.apple2/v2HOfHOmeNQ/zD76fJg_BAAJ
|
||||
; clobbers A,X
|
||||
; preserves Y
|
||||
|
||||
; vmw note: version I was using based on applesoft HPOSN was ~64 bytes
|
||||
; this one is 37 bytes
|
||||
|
||||
build_hposn_tables:
|
||||
ldx #0
|
||||
btmi:
|
||||
txa
|
||||
and #$F8
|
||||
bpl btpl1
|
||||
ora #5
|
||||
btpl1:
|
||||
asl
|
||||
bpl btpl2
|
||||
ora #5
|
||||
btpl2:
|
||||
asl
|
||||
asl
|
||||
sta hposn_low, X
|
||||
txa
|
||||
and #7
|
||||
rol
|
||||
asl hposn_low, X
|
||||
rol
|
||||
ora #$20
|
||||
sta hposn_high, X
|
||||
inx
|
||||
cpx #$C0
|
||||
bne btmi
|
||||
|
||||
; go 16 beyond, which allows our text scrolling routine
|
||||
|
||||
ldx #16
|
||||
extra_table_loop:
|
||||
lda hposn_low,X
|
||||
sta hposn_low+192,X
|
||||
lda hposn_high,X
|
||||
eor #$60
|
||||
sta hposn_high+192,X
|
||||
dex
|
||||
bpl extra_table_loop
|
||||
|
||||
rts
|
||||
|
|
@ -0,0 +1,74 @@
|
|||
;================================
|
||||
;================================
|
||||
; mockingboard interrupt handler
|
||||
;================================
|
||||
;================================
|
||||
; On Apple II/6502 the interrupt handler jumps to address in 0xfffe
|
||||
; This is in the ROM, which saves the registers
|
||||
; on older IIe it saved A to $45 (which could mess with DISK II)
|
||||
; newer IIe doesn't do that.
|
||||
; It then calculates if it is a BRK or not (which trashes A)
|
||||
; Then it sets up the stack like an interrupt and calls 0x3fe
|
||||
|
||||
; Note: the IIc is much more complicated
|
||||
; its firmware tries to decode the proper source
|
||||
; based on various things, including screen hole values
|
||||
; we bypass that by switching out ROM and replacing the
|
||||
; $fffe vector with this, but that does mean we have
|
||||
; to be sure status flag and accumulator set properly
|
||||
|
||||
interrupt_handler:
|
||||
php ; save status flags
|
||||
cld ; clear decimal mode
|
||||
pha ; save A ; 3
|
||||
; A is saved in $45 by firmware
|
||||
txa
|
||||
pha ; save X
|
||||
tya
|
||||
pha ; save Y
|
||||
|
||||
; inc $0404 ; debug (flashes char onscreen)
|
||||
|
||||
lda IRQ_COUNTDOWN
|
||||
beq skip_irq_dec
|
||||
dec IRQ_COUNTDOWN
|
||||
skip_irq_dec:
|
||||
|
||||
|
||||
.include "pt3_lib_irq_handler.s"
|
||||
|
||||
jmp exit_interrupt
|
||||
|
||||
;=================================
|
||||
; Finally done with this interrupt
|
||||
;=================================
|
||||
|
||||
quiet_exit:
|
||||
stx DONE_PLAYING
|
||||
jsr clear_ay_both
|
||||
|
||||
ldx #$ff ; also mute the channel
|
||||
stx AY_REGISTERS+7 ; just in case
|
||||
|
||||
|
||||
exit_interrupt:
|
||||
|
||||
pla
|
||||
tay ; restore Y
|
||||
pla
|
||||
tax ; restore X
|
||||
pla ; restore a ; 4
|
||||
|
||||
; on II+/IIe (but not IIc) we need to do this?
|
||||
interrupt_smc:
|
||||
lda $45 ; restore A
|
||||
plp
|
||||
|
||||
rti ; return from interrupt ; 6
|
||||
|
||||
;============
|
||||
; typical
|
||||
; ???? cycles
|
||||
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,94 @@
|
|||
;============================
|
||||
; wait for music pattern
|
||||
; also check for keypress
|
||||
;============================
|
||||
; pattern # in A
|
||||
wait_for_pattern:
|
||||
cmp current_pattern_smc+1
|
||||
bcc done_check_pattern_done ; blt
|
||||
beq done_check_pattern_done ; ble
|
||||
|
||||
lda KEYPRESS
|
||||
bpl done_check_pattern_notdone
|
||||
bit KEYRESET
|
||||
jmp done_check_pattern_done
|
||||
|
||||
;============================
|
||||
; setup timeout of A seconds
|
||||
;============================
|
||||
setup_timeout:
|
||||
sta SECOND_COUNTDOWN
|
||||
lda #0
|
||||
sta IRQ_COUNTDOWN
|
||||
rts
|
||||
|
||||
;===========================
|
||||
; countodown second timeout
|
||||
; also check for keypress
|
||||
;===========================
|
||||
; carry set = done
|
||||
check_timeout:
|
||||
; check keyboard first
|
||||
lda KEYPRESS
|
||||
bpl timeout_not_keypress
|
||||
bit KEYRESET
|
||||
; lda #0 ; reset, is this necessary?
|
||||
; sta IRQ_COUNTDOWN
|
||||
; sta SECOND_COUNTDOWN
|
||||
jmp done_check_timeout_done
|
||||
|
||||
timeout_not_keypress:
|
||||
lda IRQ_COUNTDOWN
|
||||
bne done_check_timeout_notdone
|
||||
irq_countdown_zero:
|
||||
lda SECOND_COUNTDOWN
|
||||
beq done_check_timeout_done
|
||||
|
||||
; otherwise we need to decrement and update
|
||||
dec SECOND_COUNTDOWN
|
||||
lda #50
|
||||
sta IRQ_COUNTDOWN
|
||||
|
||||
done_check_pattern_notdone:
|
||||
done_check_timeout_notdone:
|
||||
clc
|
||||
rts
|
||||
|
||||
done_check_pattern_done:
|
||||
done_check_timeout_done:
|
||||
sec
|
||||
rts
|
||||
|
||||
|
||||
;==========================
|
||||
; busy wait A * 1 50Hz tick
|
||||
;==========================
|
||||
wait_ticks:
|
||||
sta IRQ_COUNTDOWN
|
||||
wait_tick_loop:
|
||||
lda IRQ_COUNTDOWN
|
||||
bne wait_tick_loop
|
||||
wait_tick_done:
|
||||
rts
|
||||
|
||||
|
||||
;====================
|
||||
; busy wait A seconds
|
||||
;====================
|
||||
; exit early if key pressed
|
||||
|
||||
wait_seconds:
|
||||
tax
|
||||
|
||||
wait_seconds_loop:
|
||||
lda #50 ; wait 1s
|
||||
jsr wait_ticks
|
||||
|
||||
lda KEYPRESS
|
||||
bmi wait_seconds_done
|
||||
|
||||
dex
|
||||
bpl wait_seconds_loop
|
||||
wait_seconds_done:
|
||||
bit KEYRESET
|
||||
rts
|
||||
|
|
@ -0,0 +1,40 @@
|
|||
; Code from TotalReplay by 4am and qkumba
|
||||
|
||||
;------------------------------------------------------------------------------
|
||||
; Has64K
|
||||
; Checks whether computer has functioning language card (64K)
|
||||
;
|
||||
; in: none
|
||||
; out: C clear if 64K detected
|
||||
; C set if 64K not detected
|
||||
; all other flags and registers clobbered
|
||||
; ROM in memory (not LC RAM bank)
|
||||
;------------------------------------------------------------------------------
|
||||
|
||||
detect_language_card:
|
||||
|
||||
; enable language card
|
||||
; READ_RAM1_WRITE_RAM1
|
||||
|
||||
bit $C08B
|
||||
bit $C08B
|
||||
|
||||
lda #$AA ; test #1 for $D0 page
|
||||
sta $D000
|
||||
eor $D000
|
||||
bne no_lc
|
||||
lsr $D000 ; test #2 for $D0 page
|
||||
lda #$55
|
||||
eor $D000
|
||||
bne no_lc
|
||||
clc
|
||||
bcc done_detect
|
||||
|
||||
no_lc:
|
||||
sec
|
||||
|
||||
done_detect:
|
||||
; READ_ROM_NO_WRITE
|
||||
bit $C08A
|
||||
|
||||
rts
|
||||
|
|
@ -0,0 +1,30 @@
|
|||
; music, music
|
||||
|
||||
; by Vince `deater` Weaver vince@deater.net
|
||||
|
||||
.include "hardware.inc"
|
||||
.include "zp.inc"
|
||||
|
||||
;.include "qload.inc"
|
||||
|
||||
music_lib:
|
||||
|
||||
PT3_ENABLE_APPLE_IIC = 1
|
||||
|
||||
nop ; urgh to keep interrupt_handler from starting at $C4
|
||||
; which broke auto-patcher
|
||||
|
||||
; pt3 player
|
||||
; .include "pt3_lib_detect_model.s"
|
||||
.include "pt3_lib_core.s"
|
||||
.include "pt3_lib_init.s"
|
||||
.include "pt3_lib_mockingboard_setup.s"
|
||||
.include "interrupt_handler.s"
|
||||
.include "pt3_lib_mockingboard_detect.s"
|
||||
|
||||
|
||||
; only load one music track, self modify to make other
|
||||
|
||||
.align $100
|
||||
PT3_LOC:
|
||||
.incbin "music/Walking_In_The_Air_mA2E.pt3"
|
||||
Binary file not shown.
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,95 @@
|
|||
;===========================
|
||||
; Check Apple II model
|
||||
;===========================
|
||||
; this is mostly for IIc support
|
||||
; as it does interrupts differently
|
||||
|
||||
; some of this info from the document:
|
||||
; Apple II Family Identification Routines 2.2
|
||||
;
|
||||
|
||||
; ' ' = Apple II
|
||||
; '+' = Apple II+
|
||||
; 'e' = Apple IIe
|
||||
; 'c' = Apple IIc
|
||||
; 'g' = Apple IIgs
|
||||
; 'm' = mac L/C with board
|
||||
; 'j' = jplus
|
||||
; '3' = Apple III
|
||||
|
||||
detect_appleii_model:
|
||||
lda #' '
|
||||
|
||||
ldx $FBB3
|
||||
|
||||
; II is $38
|
||||
; J-plus is $C9
|
||||
; II+ is $EA (so is III)
|
||||
; IIe and newer is $06
|
||||
|
||||
cpx #$38 ; ii
|
||||
beq done_apple_detect
|
||||
|
||||
|
||||
; ii+ is EA FB1E=AD
|
||||
; iii is EA FB1E=8A 00
|
||||
|
||||
cpx #$EA
|
||||
bne not_ii_iii
|
||||
ii_or_iii:
|
||||
|
||||
lda #'+' ; ii+/iii
|
||||
|
||||
ldx $FB1E
|
||||
cpx #$AD
|
||||
beq done_apple_detect ; ii+
|
||||
|
||||
lda #'3'
|
||||
bne done_apple_detect ; bra iii
|
||||
|
||||
not_ii_iii:
|
||||
lda #'j' ; jplus
|
||||
cpx #$C9
|
||||
beq done_apple_detect
|
||||
|
||||
|
||||
cpx #$06
|
||||
bne done_apple_detect
|
||||
|
||||
apple_iie_or_newer:
|
||||
|
||||
|
||||
|
||||
ldx $FBC0 ; $EA on a IIe
|
||||
; $E0 on a IIe enhanced
|
||||
; $00 on a IIc/IIc+
|
||||
|
||||
; $FE1F = $60, IIgs
|
||||
|
||||
beq apple_iic
|
||||
|
||||
lda #'e'
|
||||
cpx #$EA
|
||||
beq done_apple_detect
|
||||
; cpx #$E0
|
||||
; beq done_apple_detect
|
||||
|
||||
; should do something if not $E0
|
||||
|
||||
; GS and IIe enhanced are the same, need to check
|
||||
|
||||
sec ; set carry
|
||||
jsr $FE1F
|
||||
bcs done_apple_detect ;If carry then IIe enhanced
|
||||
|
||||
; get here we're a IIgs?
|
||||
|
||||
lda #'g'
|
||||
bne done_apple_detect
|
||||
|
||||
apple_iic:
|
||||
lda #'c'
|
||||
|
||||
done_apple_detect:
|
||||
sta APPLEII_MODEL
|
||||
rts
|
||||
|
|
@ -0,0 +1,575 @@
|
|||
; pt3_lib_init.s
|
||||
|
||||
; Initialize a song
|
||||
|
||||
; this is done before song starts playing so it is not
|
||||
; as performance / timing critical
|
||||
|
||||
;====================================
|
||||
; pt3_init_song
|
||||
;====================================
|
||||
;
|
||||
pt3_init_song:
|
||||
|
||||
lda #$0
|
||||
sta DONE_SONG ; 3
|
||||
ldx #(end_vars-begin_vars)
|
||||
zero_song_structs_loop:
|
||||
dex
|
||||
sta note_a,X
|
||||
bne zero_song_structs_loop
|
||||
|
||||
sta pt3_noise_period_smc+1 ; 4
|
||||
sta pt3_noise_add_smc+1 ; 4
|
||||
|
||||
sta pt3_envelope_period_l_smc+1 ; 4
|
||||
sta pt3_envelope_period_h_smc+1 ; 4
|
||||
sta pt3_envelope_slide_l_smc+1 ; 4
|
||||
sta pt3_envelope_slide_h_smc+1 ; 4
|
||||
sta pt3_envelope_slide_add_l_smc+1 ; 4
|
||||
sta pt3_envelope_slide_add_h_smc+1 ; 4
|
||||
sta pt3_envelope_add_smc+1 ; 4
|
||||
sta pt3_envelope_type_smc+1 ; 4
|
||||
sta pt3_envelope_type_old_smc+1 ; 4
|
||||
sta pt3_envelope_delay_smc+1 ; 4
|
||||
sta pt3_envelope_delay_orig_smc+1 ; 4
|
||||
|
||||
sta PT3_MIXER_VAL ; 3
|
||||
|
||||
sta current_pattern_smc+1 ; 4
|
||||
sta current_line_smc+1 ; 4
|
||||
sta current_subframe_smc+1 ; 4
|
||||
|
||||
lda #$f ; 2
|
||||
sta note_a+NOTE_VOLUME ; 4
|
||||
sta note_b+NOTE_VOLUME ; 4
|
||||
sta note_c+NOTE_VOLUME ; 4
|
||||
|
||||
; default ornament/sample in A
|
||||
; X is zero coming in here
|
||||
;ldx #(NOTE_STRUCT_SIZE*0) ; 2
|
||||
jsr load_ornament0_sample1 ; 6+93
|
||||
|
||||
; default ornament/sample in B
|
||||
ldx #(NOTE_STRUCT_SIZE*1) ; 2
|
||||
jsr load_ornament0_sample1 ; 6+93
|
||||
|
||||
; default ornament/sample in C
|
||||
ldx #(NOTE_STRUCT_SIZE*2) ; 2
|
||||
jsr load_ornament0_sample1 ; 6+93
|
||||
|
||||
;=======================
|
||||
; load default speed
|
||||
|
||||
lda PT3_LOC+PT3_SPEED ; 4
|
||||
sta pt3_speed_smc+1 ; 4
|
||||
|
||||
;=======================
|
||||
; load loop
|
||||
|
||||
lda PT3_LOC+PT3_LOOP ; 4
|
||||
sta pt3_loop_smc+1 ; 4
|
||||
|
||||
|
||||
;========================
|
||||
;========================
|
||||
; set up note/freq table
|
||||
; this saves some space and makes things marginally faster longrun
|
||||
;========================
|
||||
;========================
|
||||
; note (heh) that there are separate tables if version 3.3
|
||||
; but we are going to assume we are only going to be playing
|
||||
; newer 3.4+ version files so only need the newer tables
|
||||
|
||||
ldx PT3_LOC+PT3_HEADER_FREQUENCY ; 4
|
||||
beq use_freq_table_0
|
||||
dex
|
||||
beq use_freq_table_1
|
||||
dex
|
||||
beq use_freq_table_2
|
||||
; fallthrough (freq table 3)
|
||||
|
||||
use_freq_table_3:
|
||||
;=================================================
|
||||
; Create Table #3, v4+, "PT3NoteTable_REAL_34_35"
|
||||
;=================================================
|
||||
|
||||
ldy #11 ; !2
|
||||
freq_table_3_copy_loop:
|
||||
; note, high lookup almost same as 2v4, just need to adjust one value
|
||||
|
||||
lda base2_v4_high,Y ; !3
|
||||
sta NoteTable_high,Y ; !3
|
||||
lda base3_low,Y ; !3
|
||||
sta NoteTable_low,Y ; !3
|
||||
dey ; !1
|
||||
bpl freq_table_3_copy_loop ; !2
|
||||
|
||||
dec NoteTable_high ; adjust to right value
|
||||
|
||||
jsr NoteTablePropogate ; !3
|
||||
|
||||
lda #<table3_v4_adjust
|
||||
sta note_table_adjust_smc+1
|
||||
lda #>table3_v4_adjust
|
||||
sta note_table_adjust_smc+2
|
||||
|
||||
jsr NoteTableAdjust
|
||||
|
||||
jmp done_set_freq_table
|
||||
|
||||
|
||||
|
||||
use_freq_table_2:
|
||||
;=================================================
|
||||
; Create Table #2, v4+, "PT3NoteTable_ASM_34_35"
|
||||
;=================================================
|
||||
|
||||
ldy #11
|
||||
freq_table_2_copy_loop:
|
||||
lda base2_v4_high,Y
|
||||
sta NoteTable_high,Y
|
||||
lda base2_v4_low,Y
|
||||
sta NoteTable_low,Y
|
||||
dey
|
||||
bpl freq_table_2_copy_loop
|
||||
|
||||
jsr NoteTablePropogate ; !3
|
||||
|
||||
lda #<table2_v4_adjust
|
||||
sta note_table_adjust_smc+1
|
||||
lda #>table2_v4_adjust
|
||||
sta note_table_adjust_smc+2
|
||||
|
||||
jsr NoteTableAdjust
|
||||
|
||||
jmp done_set_freq_table
|
||||
|
||||
use_freq_table_1:
|
||||
;=================================================
|
||||
; Create Table #1, "PT3NoteTable_ST"
|
||||
;=================================================
|
||||
|
||||
ldy #11
|
||||
freq_table_1_copy_loop:
|
||||
lda base1_high,Y
|
||||
sta NoteTable_high,Y
|
||||
lda base1_low,Y
|
||||
sta NoteTable_low,Y
|
||||
dey
|
||||
bpl freq_table_1_copy_loop
|
||||
|
||||
jsr NoteTablePropogate ; !3
|
||||
|
||||
; last adjustments
|
||||
lda #$FD ; Tone[23]=$3FD
|
||||
sta NoteTable_low+23
|
||||
dec NoteTable_low+46 ; Tone[46]-=1;
|
||||
|
||||
|
||||
jmp done_set_freq_table
|
||||
|
||||
|
||||
use_freq_table_0:
|
||||
;=================================================
|
||||
; Create Table #0, "PT3NoteTable_PT_34_35"
|
||||
;=================================================
|
||||
|
||||
ldy #11
|
||||
freq_table_0_copy_loop:
|
||||
lda base0_v4_high,Y
|
||||
sta NoteTable_high,Y
|
||||
lda base0_v4_low,Y
|
||||
sta NoteTable_low,Y
|
||||
dey
|
||||
bpl freq_table_0_copy_loop
|
||||
|
||||
jsr NoteTablePropogate ; !3
|
||||
|
||||
lda #<table0_v4_adjust
|
||||
sta note_table_adjust_smc+1
|
||||
lda #>table0_v4_adjust
|
||||
sta note_table_adjust_smc+2
|
||||
|
||||
jsr NoteTableAdjust
|
||||
|
||||
|
||||
done_set_freq_table:
|
||||
|
||||
|
||||
;======================
|
||||
; calculate version
|
||||
ldx #6 ; 2
|
||||
lda PT3_LOC+PT3_VERSION ; 4
|
||||
sec ; 2
|
||||
sbc #'0' ; 2
|
||||
cmp #9 ; 2
|
||||
bcs not_ascii_number ; bge ; 2/3
|
||||
tax ; 2
|
||||
|
||||
not_ascii_number:
|
||||
|
||||
; adjust version<6 SMC code in the slide code
|
||||
|
||||
; FIXME: I am sure there's a more clever way to do this
|
||||
|
||||
lda #$2C ; BIT ; 2
|
||||
cpx #$6 ; 2
|
||||
bcs version_greater_than_or_equal_6 ; bgt ; 3
|
||||
; less than 6, jump
|
||||
; also carry is known to be clear
|
||||
adc #$20 ; BIT->JMP 2C->4C ; 2
|
||||
version_greater_than_or_equal_6:
|
||||
sta version_smc ; 4
|
||||
|
||||
pick_volume_table:
|
||||
|
||||
;=======================
|
||||
; Pick which volume number, based on version
|
||||
|
||||
; if (PlParams.PT3.PT3_Version <= 4)
|
||||
|
||||
cpx #5 ; 2
|
||||
|
||||
; carry clear = 3.3/3.4 table
|
||||
; carry set = 3.5 table
|
||||
|
||||
;==========================
|
||||
; VolTableCreator
|
||||
;==========================
|
||||
; Creates the appropriate volume table
|
||||
; based on z80 code by Ivan Roshin ZXAYHOBETA/VTII10bG.asm
|
||||
;
|
||||
|
||||
; Called with carry==0 for 3.3/3.4 table
|
||||
; Called with carry==1 for 3.5 table
|
||||
|
||||
; 177f-1932 = 435 bytes, not that much better than 512 of lookup
|
||||
|
||||
|
||||
VolTableCreator:
|
||||
|
||||
; Init initial variables
|
||||
lda #$0
|
||||
sta z80_d_smc+1
|
||||
ldy #$11
|
||||
|
||||
; Set up self modify
|
||||
|
||||
ldx #$2A ; ROL for self-modify
|
||||
bcs vol_type_35
|
||||
|
||||
vol_type_33:
|
||||
|
||||
; For older table, we set initial conditions a bit
|
||||
; different
|
||||
|
||||
dey
|
||||
tya
|
||||
|
||||
ldx #$ea ; NOP for self modify
|
||||
|
||||
vol_type_35:
|
||||
sty z80_l_smc+1 ; l=16 or 17
|
||||
sta z80_e_smc+1 ; e=16 or 0
|
||||
stx vol_smc ; set the self-modify code
|
||||
|
||||
ldy #16 ; skip first row, all zeros
|
||||
ldx #16 ; c=16
|
||||
vol_outer:
|
||||
clc ; add HL,DE
|
||||
z80_l_smc:
|
||||
lda #$d1
|
||||
z80_e_smc:
|
||||
adc #$d1
|
||||
sta z80_e_smc+1
|
||||
lda #0
|
||||
z80_d_smc:
|
||||
adc #$d1
|
||||
sta z80_d_smc+1 ; carry is important
|
||||
|
||||
; sbc hl,hl
|
||||
lda #0
|
||||
adc #$ff
|
||||
eor #$ff
|
||||
|
||||
vol_write:
|
||||
sta z80_h_smc+1
|
||||
pha
|
||||
|
||||
vol_inner:
|
||||
pla
|
||||
pha
|
||||
|
||||
vol_smc:
|
||||
nop ; nop or ROL depending
|
||||
|
||||
z80_h_smc:
|
||||
lda #$d1
|
||||
|
||||
adc #$0 ; a=a+carry;
|
||||
|
||||
sta VolumeTable,Y
|
||||
iny
|
||||
|
||||
pla ; add HL,DE
|
||||
adc z80_e_smc+1
|
||||
pha
|
||||
lda z80_h_smc+1
|
||||
adc z80_d_smc+1
|
||||
sta z80_h_smc+1
|
||||
|
||||
inx ; inc C
|
||||
txa ; a=c
|
||||
and #$f
|
||||
bne vol_inner
|
||||
|
||||
|
||||
pla
|
||||
|
||||
lda z80_e_smc+1 ; a=e
|
||||
cmp #$77
|
||||
bne vol_m3
|
||||
|
||||
inc z80_e_smc+1
|
||||
|
||||
vol_m3:
|
||||
txa ; a=c
|
||||
bne vol_outer
|
||||
|
||||
vol_done:
|
||||
rts
|
||||
|
||||
|
||||
;=========================================
|
||||
; copy note table seed to proper location
|
||||
;=========================================
|
||||
|
||||
; faster inlined
|
||||
|
||||
;NoteTableCopy:
|
||||
|
||||
; ldy #11 ; !2
|
||||
;note_table_copy_loop:
|
||||
;ntc_smc1:
|
||||
; lda base1_high,Y ; !3
|
||||
; sta NoteTable_high,Y ; !3
|
||||
;ntc_smc2:
|
||||
; lda base1_low,Y ; !3
|
||||
; sta NoteTable_low,Y ; !3
|
||||
; dey ; !1
|
||||
; bpl note_table_copy_loop ; !2
|
||||
; rts ; !1
|
||||
|
||||
|
||||
;==========================================
|
||||
; propogate the freq down, dividing by two
|
||||
;==========================================
|
||||
NoteTablePropogate:
|
||||
|
||||
ldy #0
|
||||
note_table_propogate_loop:
|
||||
clc
|
||||
lda NoteTable_high,Y
|
||||
ror
|
||||
sta NoteTable_high+12,Y
|
||||
|
||||
lda NoteTable_low,Y
|
||||
ror
|
||||
sta NoteTable_low+12,Y
|
||||
|
||||
iny
|
||||
cpy #84
|
||||
bne note_table_propogate_loop
|
||||
|
||||
rts
|
||||
|
||||
|
||||
;================================================
|
||||
; propogation isn't enough, various values
|
||||
; are often off by one, so adjust using a bitmask
|
||||
;================================================
|
||||
NoteTableAdjust:
|
||||
|
||||
ldx #0
|
||||
note_table_adjust_outer:
|
||||
|
||||
note_table_adjust_smc:
|
||||
lda table0_v4_adjust,X
|
||||
sta PT3_TEMP
|
||||
|
||||
; reset smc
|
||||
lda #<NoteTable_low
|
||||
sta ntl_smc+1
|
||||
lda #>NoteTable_low
|
||||
sta ntl_smc+2
|
||||
|
||||
|
||||
ldy #7
|
||||
note_table_adjust_inner:
|
||||
ror PT3_TEMP
|
||||
bcc note_table_skip_adjust
|
||||
|
||||
ntl_smc:
|
||||
inc NoteTable_low,X
|
||||
|
||||
note_table_skip_adjust:
|
||||
clc
|
||||
lda #12
|
||||
adc ntl_smc+1
|
||||
sta ntl_smc+1
|
||||
lda #0
|
||||
adc ntl_smc+2 ; unnecessary if aligned
|
||||
sta ntl_smc+2
|
||||
|
||||
skip_adjust_done:
|
||||
dey
|
||||
bpl note_table_adjust_inner
|
||||
|
||||
inx
|
||||
cpx #12
|
||||
bne note_table_adjust_outer
|
||||
|
||||
rts
|
||||
|
||||
|
||||
;base0_v3_high:
|
||||
;.byte $0C,$0B,$0A,$0A,$09,$09,$08,$08,$07,$07,$06,$06
|
||||
;base0_v3_low:
|
||||
;.byte $21,$73,$CE,$33,$A0,$16,$93,$18,$A4,$36,$CE,$6D
|
||||
|
||||
; note: same as base0_v3_high
|
||||
base0_v4_high:
|
||||
.byte $0C,$0B,$0A,$0A,$09,$09,$08,$08,$07,$07,$06,$06
|
||||
base0_v4_low:
|
||||
.byte $22,$73,$CF,$33,$A1,$17,$94,$19,$A4,$37,$CF,$6D
|
||||
|
||||
base1_high:
|
||||
.byte $0E,$0E,$0D,$0C,$0B,$0B,$0A,$09,$09,$08,$08,$07
|
||||
base1_low:
|
||||
.byte $F8,$10,$60,$80,$D8,$28,$88,$F0,$60,$E0,$58,$E0
|
||||
|
||||
;base2_v3_high:
|
||||
;.byte $0D,$0C,$0B,$0B,$0A,$09,$09,$08,$08,$07,$07,$07
|
||||
;base2_v3_low:
|
||||
;.byte $3E,$80,$CC,$22,$82,$EC,$5C,$D6,$58,$E0,$6E,$04
|
||||
|
||||
; note almost same as above
|
||||
base2_v4_high:
|
||||
.byte $0D,$0C,$0B,$0A,$0A,$09,$09,$08,$08,$07,$07,$06
|
||||
base2_v4_low:
|
||||
.byte $10,$55,$A4,$FC,$5F,$CA,$3D,$B8,$3B,$C5,$55,$EC
|
||||
|
||||
; note almost same as above
|
||||
;base3_high:
|
||||
;.byte $0C,$0C,$0B,$0A,$0A,$09,$09,$08,$08,$07,$07,$06
|
||||
base3_low:
|
||||
.byte $DA,$22,$73,$CF,$33,$A1,$17,$94,$19,$A4,$37,$CF
|
||||
|
||||
|
||||
; Adjustment factors
|
||||
table0_v4_adjust:
|
||||
.byte $40,$e6,$9c,$66,$40,$2c,$20,$30,$48,$6c,$1c,$5a
|
||||
|
||||
table2_v4_adjust:
|
||||
.byte $20,$a8,$40,$f8,$bc,$90,$78,$70,$74,$08,$2a,$50
|
||||
|
||||
table3_v4_adjust:
|
||||
.byte $B4,$40,$e6,$9c,$66,$40,$2c,$20,$30,$48,$6c,$1c
|
||||
|
||||
|
||||
; Table #1 of Pro Tracker 3.3x - 3.5x
|
||||
;PT3NoteTable_ST_high:
|
||||
;.byte $0E,$0E,$0D,$0C,$0B,$0B,$0A,$09
|
||||
;.byte $09,$08,$08,$07,$07,$07,$06,$06
|
||||
;.byte $05,$05,$05,$04,$04,$04,$04,$03
|
||||
;.byte $03,$03,$03,$03,$02,$02,$02,$02
|
||||
;.byte $02,$02,$02,$01,$01,$01,$01,$01
|
||||
;.byte $01,$01,$01,$01,$01,$01,$01,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
|
||||
;PT3NoteTable_ST_low:
|
||||
;.byte $F8,$10,$60,$80,$D8,$28,$88,$F0
|
||||
;.byte $60,$E0,$58,$E0,$7C,$08,$B0,$40
|
||||
;.byte $EC,$94,$44,$F8,$B0,$70,$2C,$FD
|
||||
;.byte $BE,$84,$58,$20,$F6,$CA,$A2,$7C
|
||||
;.byte $58,$38,$16,$F8,$DF,$C2,$AC,$90
|
||||
;.byte $7B,$65,$51,$3E,$2C,$1C,$0A,$FC
|
||||
;.byte $EF,$E1,$D6,$C8,$BD,$B2,$A8,$9F
|
||||
;.byte $96,$8E,$85,$7E,$77,$70,$6B,$64
|
||||
;.byte $5E,$59,$54,$4F,$4B,$47,$42,$3F
|
||||
;.byte $3B,$38,$35,$32,$2F,$2C,$2A,$27
|
||||
;.byte $25,$23,$21,$1F,$1D,$1C,$1A,$19
|
||||
;.byte $17,$16,$15,$13,$12,$11,$10,$0F
|
||||
|
||||
|
||||
; Table #2 of Pro Tracker 3.4x - 3.5x
|
||||
;PT3NoteTable_ASM_34_35_high:
|
||||
;.byte $0D,$0C,$0B,$0A,$0A,$09,$09,$08
|
||||
;.byte $08,$07,$07,$06,$06,$06,$05,$05
|
||||
;.byte $05,$04,$04,$04,$04,$03,$03,$03
|
||||
;.byte $03,$03,$02,$02,$02,$02,$02,$02
|
||||
;.byte $02,$01,$01,$01,$01,$01,$01,$01
|
||||
;.byte $01,$01,$01,$01,$01,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
;.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
|
||||
;PT3NoteTable_ASM_34_35_low:
|
||||
;.byte $10,$55,$A4,$FC,$5F,$CA,$3D,$B8
|
||||
;.byte $3B,$C5,$55,$EC,$88,$2A,$D2,$7E
|
||||
;.byte $2F,$E5,$9E,$5C,$1D,$E2,$AB,$76
|
||||
;.byte $44,$15,$E9,$BF,$98,$72,$4F,$2E
|
||||
;.byte $0F,$F1,$D5,$BB,$A2,$8B,$74,$60
|
||||
;.byte $4C,$39,$28,$17,$07,$F9,$EB,$DD
|
||||
;.byte $D1,$C5,$BA,$B0,$A6,$9D,$94,$8C
|
||||
;.byte $84,$7C,$75,$6F,$69,$63,$5D,$58
|
||||
;.byte $53,$4E,$4A,$46,$42,$3E,$3B,$37
|
||||
;.byte $34,$31,$2F,$2C,$29,$27,$25,$23
|
||||
;.byte $21,$1F,$1D,$1C,$1A,$19,$17,$16
|
||||
;.byte $15,$14,$12,$11,$10,$0F,$0E,$0D
|
||||
|
||||
|
||||
;PT3VolumeTable_33_34:
|
||||
;.byte $0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0
|
||||
;.byte $0,$0,$0,$0,$0,$0,$0,$0,$1,$1,$1,$1,$1,$1,$1,$1
|
||||
;.byte $0,$0,$0,$0,$0,$0,$1,$1,$1,$1,$1,$2,$2,$2,$2,$2
|
||||
;.byte $0,$0,$0,$0,$1,$1,$1,$1,$2,$2,$2,$2,$3,$3,$3,$3
|
||||
;.byte $0,$0,$0,$0,$1,$1,$1,$2,$2,$2,$3,$3,$3,$4,$4,$4
|
||||
;.byte $0,$0,$0,$1,$1,$1,$2,$2,$3,$3,$3,$4,$4,$4,$5,$5
|
||||
;.byte $0,$0,$0,$1,$1,$2,$2,$3,$3,$3,$4,$4,$5,$5,$6,$6
|
||||
;.byte $0,$0,$1,$1,$2,$2,$3,$3,$4,$4,$5,$5,$6,$6,$7,$7
|
||||
;.byte $0,$0,$1,$1,$2,$2,$3,$3,$4,$5,$5,$6,$6,$7,$7,$8
|
||||
;.byte $0,$0,$1,$1,$2,$3,$3,$4,$5,$5,$6,$6,$7,$8,$8,$9
|
||||
;.byte $0,$0,$1,$2,$2,$3,$4,$4,$5,$6,$6,$7,$8,$8,$9,$A
|
||||
;.byte $0,$0,$1,$2,$3,$3,$4,$5,$6,$6,$7,$8,$9,$9,$A,$B
|
||||
;.byte $0,$0,$1,$2,$3,$4,$4,$5,$6,$7,$8,$8,$9,$A,$B,$C
|
||||
;.byte $0,$0,$1,$2,$3,$4,$5,$6,$7,$7,$8,$9,$A,$B,$C,$D
|
||||
;.byte $0,$0,$1,$2,$3,$4,$5,$6,$7,$8,$9,$A,$B,$C,$D,$E
|
||||
;.byte $0,$1,$2,$3,$4,$5,$6,$7,$8,$9,$A,$B,$C,$D,$E,$F
|
||||
|
||||
;PT3VolumeTable_35:
|
||||
;.byte $0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0
|
||||
;.byte $0,$0,$0,$0,$0,$0,$0,$0,$1,$1,$1,$1,$1,$1,$1,$1
|
||||
;.byte $0,$0,$0,$0,$1,$1,$1,$1,$1,$1,$1,$1,$2,$2,$2,$2
|
||||
;.byte $0,$0,$0,$1,$1,$1,$1,$1,$2,$2,$2,$2,$2,$3,$3,$3
|
||||
;.byte $0,$0,$1,$1,$1,$1,$2,$2,$2,$2,$3,$3,$3,$3,$4,$4
|
||||
;.byte $0,$0,$1,$1,$1,$2,$2,$2,$3,$3,$3,$4,$4,$4,$5,$5
|
||||
;.byte $0,$0,$1,$1,$2,$2,$2,$3,$3,$4,$4,$4,$5,$5,$6,$6
|
||||
;.byte $0,$0,$1,$1,$2,$2,$3,$3,$4,$4,$5,$5,$6,$6,$7,$7
|
||||
;.byte $0,$1,$1,$2,$2,$3,$3,$4,$4,$5,$5,$6,$6,$7,$7,$8
|
||||
;.byte $0,$1,$1,$2,$2,$3,$4,$4,$5,$5,$6,$7,$7,$8,$8,$9
|
||||
;.byte $0,$1,$1,$2,$3,$3,$4,$5,$5,$6,$7,$7,$8,$9,$9,$A
|
||||
;.byte $0,$1,$1,$2,$3,$4,$4,$5,$6,$7,$7,$8,$9,$A,$A,$B
|
||||
;.byte $0,$1,$2,$2,$3,$4,$5,$6,$6,$7,$8,$9,$A,$A,$B,$C
|
||||
;.byte $0,$1,$2,$3,$3,$4,$5,$6,$7,$8,$9,$A,$A,$B,$C,$D
|
||||
;.byte $0,$1,$2,$3,$4,$5,$6,$7,$7,$8,$9,$A,$B,$C,$D,$E
|
||||
;.byte $0,$1,$2,$3,$4,$5,$6,$7,$8,$9,$A,$B,$C,$D,$E,$F
|
||||
|
|
@ -0,0 +1,116 @@
|
|||
|
||||
|
||||
pt3_irq_handler:
|
||||
|
||||
pt3_irq_smc1:
|
||||
bit MOCK_6522_T1CL ; clear 6522 interrupt by reading T1C-L ; 4
|
||||
|
||||
lda DONE_PLAYING ; 3
|
||||
beq pt3_play_music ; if song done, don't play music ; 3/2nt
|
||||
jmp done_pt3_irq_handler ; 3
|
||||
;============
|
||||
; 13
|
||||
|
||||
pt3_play_music:
|
||||
|
||||
; decode a frame of music
|
||||
|
||||
jsr pt3_make_frame
|
||||
|
||||
; handle song over condition
|
||||
lda DONE_SONG
|
||||
beq mb_write_frame ; if not done, continue
|
||||
|
||||
lda LOOP ; see if looping
|
||||
beq move_to_next
|
||||
|
||||
pt3_loop_smc:
|
||||
lda #$d1 ; looping, move to loop location
|
||||
; non-zero to avoid the temptation
|
||||
; to merge with following lda #$0
|
||||
sta current_pattern_smc+1
|
||||
lda #$0
|
||||
sta current_line_smc+1
|
||||
sta current_subframe_smc+1
|
||||
sta DONE_SONG ; undo the next song
|
||||
|
||||
beq done_pt3_irq_handler ; branch always
|
||||
|
||||
move_to_next:
|
||||
; same as "press right"
|
||||
ldx #$20
|
||||
jmp quiet_exit
|
||||
|
||||
;======================================
|
||||
; Write frames to Mockingboard
|
||||
;======================================
|
||||
; for speed could merge this into
|
||||
; the decode code
|
||||
|
||||
mb_write_frame:
|
||||
|
||||
|
||||
tax ; set up reg count ; 2
|
||||
;============
|
||||
; 2
|
||||
|
||||
;==================================
|
||||
; loop through the 14 registers
|
||||
; reading the value, then write out
|
||||
;==================================
|
||||
|
||||
mb_write_loop:
|
||||
lda AY_REGISTERS,X ; load register value ; 4
|
||||
|
||||
; special case R13. If it is 0xff, then don't update
|
||||
; otherwise might spuriously reset the envelope settings
|
||||
|
||||
cpx #13 ; 2
|
||||
bne mb_not_13 ; 3/2nt
|
||||
cmp #$ff ; 2
|
||||
beq mb_skip_13 ; 3/2nt
|
||||
;============
|
||||
; typ 5
|
||||
mb_not_13:
|
||||
|
||||
|
||||
; address
|
||||
pt3_irq_smc2:
|
||||
stx MOCK_6522_ORA1 ; put address on PA1 ; 4
|
||||
stx MOCK_6522_ORA2 ; put address on PA2 ; 4
|
||||
ldy #MOCK_AY_LATCH_ADDR ; latch_address for PB1 ; 2
|
||||
pt3_irq_smc3:
|
||||
sty MOCK_6522_ORB1 ; latch_address on PB1 ; 4
|
||||
sty MOCK_6522_ORB2 ; latch_address on PB2 ; 4
|
||||
ldy #MOCK_AY_INACTIVE ; go inactive ; 2
|
||||
pt3_irq_smc4:
|
||||
sty MOCK_6522_ORB1 ; 4
|
||||
sty MOCK_6522_ORB2 ; 4
|
||||
|
||||
; value
|
||||
pt3_irq_smc5:
|
||||
sta MOCK_6522_ORA1 ; put value on PA1 ; 4
|
||||
sta MOCK_6522_ORA2 ; put value on PA2 ; 4
|
||||
lda #MOCK_AY_WRITE ; ; 2
|
||||
pt3_irq_smc6:
|
||||
sta MOCK_6522_ORB1 ; write on PB1 ; 4
|
||||
sty MOCK_6522_ORB1 ; 4
|
||||
pt3_irq_smc7:
|
||||
sta MOCK_6522_ORB2 ; write on PB2 ; 4
|
||||
sty MOCK_6522_ORB2 ; 4
|
||||
;===========
|
||||
; 56
|
||||
mb_no_write:
|
||||
inx ; point to next register ; 2
|
||||
cpx #14 ; if 14 we're done ; 2
|
||||
bmi mb_write_loop ; otherwise, loop ; 3/2nt
|
||||
;============
|
||||
; 7
|
||||
mb_skip_13:
|
||||
|
||||
|
||||
;=================================
|
||||
; Finally done with this interrupt
|
||||
;=================================
|
||||
|
||||
done_pt3_irq_handler:
|
||||
|
|
@ -0,0 +1,54 @@
|
|||
; Mockingboad programming:
|
||||
; + Has two 6522 I/O chips connected to two AY-3-8910 chips
|
||||
; + Optionally has some speech chips controlled via the outport on the AY
|
||||
; + Often in slot 4
|
||||
; TODO: how to auto-detect?
|
||||
; References used:
|
||||
; http://macgui.com/usenet/?group=2&id=8366
|
||||
; 6522 Data Sheet
|
||||
; AY-3-8910 Data Sheet
|
||||
|
||||
;========================
|
||||
; Mockingboard card
|
||||
; Essentially two 6522s hooked to the Apple II bus
|
||||
; Connected to AY-3-8910 chips
|
||||
; PA0-PA7 on 6522 connected to DA0-DA7 on AY
|
||||
; PB0 on 6522 connected to BC1
|
||||
; PB1 on 6522 connected to BDIR
|
||||
; PB2 on 6522 connected to RESET
|
||||
|
||||
|
||||
; left speaker
|
||||
MOCK_6522_ORB1 = $C400 ; 6522 #1 port b data
|
||||
MOCK_6522_ORA1 = $C401 ; 6522 #1 port a data
|
||||
MOCK_6522_DDRB1 = $C402 ; 6522 #1 data direction port B
|
||||
MOCK_6522_DDRA1 = $C403 ; 6522 #1 data direction port A
|
||||
MOCK_6522_T1CL = $C404 ; 6522 #1 t1 low order latches
|
||||
MOCK_6522_T1CH = $C405 ; 6522 #1 t1 high order counter
|
||||
MOCK_6522_T1LL = $C406 ; 6522 #1 t1 low order latches
|
||||
MOCK_6522_T1LH = $C407 ; 6522 #1 t1 high order latches
|
||||
MOCK_6522_T2CL = $C408 ; 6522 #1 t2 low order latches
|
||||
MOCK_6522_T2CH = $C409 ; 6522 #1 t2 high order counters
|
||||
MOCK_6522_SR = $C40A ; 6522 #1 shift register
|
||||
MOCK_6522_ACR = $C40B ; 6522 #1 auxilliary control register
|
||||
MOCK_6522_PCR = $C40C ; 6522 #1 peripheral control register
|
||||
MOCK_6522_IFR = $C40D ; 6522 #1 interrupt flag register
|
||||
MOCK_6522_IER = $C40E ; 6522 #1 interrupt enable register
|
||||
MOCK_6522_ORANH = $C40F ; 6522 #1 port a data no handshake
|
||||
|
||||
|
||||
; right speaker
|
||||
MOCK_6522_ORB2 = $C480 ; 6522 #2 port b data
|
||||
MOCK_6522_ORA2 = $C481 ; 6522 #2 port a data
|
||||
MOCK_6522_DDRB2 = $C482 ; 6522 #2 data direction port B
|
||||
MOCK_6522_DDRA2 = $C483 ; 6522 #2 data direction port A
|
||||
|
||||
; AY-3-8910 commands on port B
|
||||
; RESET BDIR BC1
|
||||
MOCK_AY_RESET = $0 ; 0 0 0
|
||||
MOCK_AY_INACTIVE = $4 ; 1 0 0
|
||||
MOCK_AY_READ = $5 ; 1 0 1
|
||||
MOCK_AY_WRITE = $6 ; 1 1 0
|
||||
MOCK_AY_LATCH_ADDR = $7 ; 1 1 1
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,222 @@
|
|||
;===================================================================
|
||||
; code to detect mockingboard
|
||||
;===================================================================
|
||||
; this isn't always easy
|
||||
; my inclination is to just assume slot #4 but that isn't always realistic
|
||||
|
||||
; code below based on "hw.mockingboard.a" from "Total Replay"
|
||||
|
||||
;license:MIT
|
||||
; By Andrew Roughan
|
||||
; in the style of 4am for Total Replay
|
||||
;
|
||||
; Mockingboard support functions
|
||||
;
|
||||
|
||||
;------------------------------------------------------------------------------
|
||||
; HasMockingboard
|
||||
; detect Mockingboard card by searching for 6522 timers across all slots
|
||||
; access 6522 timers with deterministic cycle counts
|
||||
;
|
||||
; based on prior art in Mockingboard Developers Toolkit
|
||||
; with optimisation from deater/french touch
|
||||
; also takes into account FastChip //e clock difference
|
||||
;
|
||||
; in: none
|
||||
; accelerators should be off
|
||||
; out: C set if Mockingboard found in any slot
|
||||
; if card was found, X = #$Cn where n is the slot number of the card
|
||||
; C clear if no Mockingboard found
|
||||
; other flags clobbered
|
||||
; A/Y clobbered
|
||||
;------------------------------------------------------------------------------
|
||||
|
||||
mockingboard_detect:
|
||||
|
||||
; activate Mockingboard IIc
|
||||
; + the Mockingboard has to take over Slot#4 (IIc has no slots)
|
||||
; in theory any write to the firmware area in $C400 will
|
||||
; activate it, but that might not be fast enough when detecting
|
||||
; so writing $FF to $C403/$C404 is official way to enable
|
||||
; + Note this disables permanently the mouse firmware in $C400
|
||||
; so "normal" interrupts are broken :( The hack to fix things
|
||||
; is to switch in RAM for $F000 and just replace the IRQ
|
||||
; vectors at $FFFE/$FFFF instead of $3FE/$3FF but that makes
|
||||
; it difficult if you actually wanted to use any
|
||||
; Applesoft/Monitor ROM routines
|
||||
|
||||
.ifdef PT3_ENABLE_APPLE_IIC
|
||||
lda APPLEII_MODEL
|
||||
cmp #'c'
|
||||
bne not_iic
|
||||
|
||||
lda #$ff
|
||||
|
||||
; don't bother patching these, IIc mockingboard always slot 4
|
||||
|
||||
sta MOCK_6522_DDRA1 ; $C403
|
||||
sta MOCK_6522_T1CL ; $C404
|
||||
.endif
|
||||
|
||||
not_iic:
|
||||
lda #$00
|
||||
sta MB_ADDR_L
|
||||
ldx #$C7 ; start at slot #7
|
||||
mb_slot_loop:
|
||||
stx MB_ADDR_H
|
||||
ldy #$04 ; 6522 #1 $Cx04
|
||||
jsr mb_timer_check
|
||||
bne mb_next_slot
|
||||
ldy #$84 ; 6522 #2 $Cx84
|
||||
jsr mb_timer_check
|
||||
bne mb_next_slot
|
||||
mb_found:
|
||||
sec ; found
|
||||
rts
|
||||
|
||||
mb_next_slot:
|
||||
dex
|
||||
cpx #$C0
|
||||
bne mb_slot_loop
|
||||
|
||||
clc ; not found
|
||||
rts
|
||||
|
||||
mb_timer_check:
|
||||
lda (MB_ADDR_L),Y ; read 6522 timer low byte
|
||||
sta MB_VALUE
|
||||
lda (MB_ADDR_L),Y ; second time
|
||||
sec
|
||||
sbc MB_VALUE
|
||||
cmp #$F8 ; looking for (-)8 cycles between reads
|
||||
beq mb_timer_check_done
|
||||
cmp #$F7 ; FastChip //e clock is different
|
||||
mb_timer_check_done:
|
||||
rts
|
||||
|
||||
|
||||
|
||||
.if 0
|
||||
|
||||
|
||||
;=======================================
|
||||
; Detect a Mockingboard card
|
||||
;=======================================
|
||||
; Based on code from the French Touch "Pure Noise" Demo
|
||||
; Attempts to time an instruction sequence with a 6522
|
||||
;
|
||||
; If found, puts in bMB
|
||||
; MB_ADDRL:MB_ADDRH has address of Mockingboard
|
||||
; returns X=0 if not found, X=1 if found
|
||||
|
||||
mockingboard_detect:
|
||||
lda #0
|
||||
sta MB_ADDRL
|
||||
|
||||
mb_detect_loop: ; self-modifying
|
||||
lda #$07 ; we start in slot 7 ($C7) and go down to 0 ($C0)
|
||||
ora #$C0 ; make it start with C
|
||||
sta MB_ADDRH
|
||||
ldy #04 ; $CX04
|
||||
ldx #02 ; 2 tries?
|
||||
mb_check_cycle_loop:
|
||||
lda (MB_ADDRL),Y ; timer 6522 (Low Order Counter)
|
||||
; count down
|
||||
sta PT3_TEMP ; 3 cycles
|
||||
lda (MB_ADDRL),Y ; + 5 cycles = 8 cycles
|
||||
; between the two accesses to the timer
|
||||
sec
|
||||
sbc PT3_TEMP ; subtract to see if we had 8 cycles
|
||||
cmp #$f8 ; -8
|
||||
bne mb_not_in_this_slot
|
||||
dex ; decrement, try one more time
|
||||
bne mb_check_cycle_loop ; loop detection
|
||||
inx ; Mockingboard found (X=1)
|
||||
done_mb_detect:
|
||||
;stx bMB ; store result to bMB
|
||||
rts ; return
|
||||
|
||||
mb_not_in_this_slot:
|
||||
dec mb_detect_loop+1 ; decrement the "slot" (self_modify)
|
||||
bne mb_detect_loop ; loop down to one
|
||||
ldx #00
|
||||
beq done_mb_detect
|
||||
|
||||
;alternative MB detection from Nox Archaist
|
||||
; lda #$04
|
||||
; sta MB_ADDRL
|
||||
; ldx #$c7
|
||||
;
|
||||
;find_mb:
|
||||
; stx MB_ADDRH
|
||||
;
|
||||
; ;detect sound I
|
||||
;
|
||||
; sec
|
||||
; ldy #$00
|
||||
; lda (MB_ADDRL), y
|
||||
; sbc (MB_ADDRL), y
|
||||
; cmp #$05
|
||||
; beq found_mb
|
||||
; dex
|
||||
; cpx #$c0
|
||||
; bne find_mb
|
||||
; ldx #$00 ;no mockingboard found
|
||||
; rts
|
||||
;
|
||||
;found_mb:
|
||||
; ldx #$01 ;mockingboard found
|
||||
; rts
|
||||
;
|
||||
; ;optionally detect sound II
|
||||
;
|
||||
; sec
|
||||
; ldy #$80
|
||||
; lda (MB_ADDRL), y
|
||||
; sbc (MB_ADDRL), y
|
||||
; cmp #$05
|
||||
; beq found_mb
|
||||
|
||||
|
||||
;=======================================
|
||||
; Detect a Mockingboard card in Slot4
|
||||
;=======================================
|
||||
; Based on code from the French Touch "Pure Noise" Demo
|
||||
; Attempts to time an instruction sequence with a 6522
|
||||
;
|
||||
; MB_ADDRL:MB_ADDRH has address of Mockingboard
|
||||
; returns X=0 if not found, X=1 if found
|
||||
|
||||
mockingboard_detect_slot4:
|
||||
lda #0
|
||||
sta MB_ADDRL
|
||||
|
||||
mb4_detect_loop: ; self-modifying
|
||||
lda #$04 ; we're only looking in Slot 4
|
||||
ora #$C0 ; make it start with C
|
||||
sta MB_ADDRH
|
||||
ldy #04 ; $CX04
|
||||
ldx #02 ; 2 tries?
|
||||
mb4_check_cycle_loop:
|
||||
lda (MB_ADDRL),Y ; timer 6522 (Low Order Counter)
|
||||
; count down
|
||||
sta PT3_TEMP ; 3 cycles
|
||||
lda (MB_ADDRL),Y ; + 5 cycles = 8 cycles
|
||||
; between the two accesses to the timer
|
||||
sec
|
||||
sbc PT3_TEMP ; subtract to see if we had 8 cycles
|
||||
cmp #$f8 ; -8
|
||||
bne mb4_not_in_this_slot
|
||||
dex ; decrement, try one more time
|
||||
bne mb4_check_cycle_loop ; loop detection
|
||||
inx ; Mockingboard found (X=1)
|
||||
done_mb4_detect:
|
||||
rts ; return
|
||||
|
||||
mb4_not_in_this_slot:
|
||||
ldx #00
|
||||
beq done_mb4_detect
|
||||
|
||||
|
||||
|
||||
.endif
|
||||
|
|
@ -0,0 +1,121 @@
|
|||
|
||||
;===================================================================
|
||||
; code to patch mockingboard if not in slot#4
|
||||
;===================================================================
|
||||
; this is the brute force version, we have to patch 39 locations
|
||||
; see further below if you want to try a smaller, more dangerous, patch
|
||||
|
||||
.if 0
|
||||
mockingboard_patch:
|
||||
|
||||
lda MB_ADDR_H
|
||||
|
||||
sta pt3_irq_smc1+2 ; 1
|
||||
|
||||
sta pt3_irq_smc2+2 ; 2
|
||||
sta pt3_irq_smc2+5 ; 3
|
||||
|
||||
sta pt3_irq_smc3+2 ; 4
|
||||
sta pt3_irq_smc3+5 ; 5
|
||||
|
||||
sta pt3_irq_smc4+2 ; 6
|
||||
sta pt3_irq_smc4+5 ; 7
|
||||
|
||||
sta pt3_irq_smc5+2 ; 8
|
||||
sta pt3_irq_smc5+5 ; 9
|
||||
|
||||
sta pt3_irq_smc6+2 ; 10
|
||||
sta pt3_irq_smc6+5 ; 11
|
||||
|
||||
sta pt3_irq_smc7+2 ; 12
|
||||
sta pt3_irq_smc7+5 ; 13
|
||||
|
||||
sta mock_init_smc1+2 ; 14
|
||||
sta mock_init_smc1+5 ; 15
|
||||
|
||||
sta mock_init_smc2+2 ; 16
|
||||
sta mock_init_smc2+5 ; 17
|
||||
|
||||
sta reset_ay_smc1+2 ; 18
|
||||
sta reset_ay_smc2+2 ; 19
|
||||
sta reset_ay_smc3+2 ; 20
|
||||
sta reset_ay_smc4+2 ; 21
|
||||
|
||||
sta write_ay_smc1+2 ; 22
|
||||
sta write_ay_smc1+5 ; 23
|
||||
|
||||
sta write_ay_smc2+2 ; 24
|
||||
sta write_ay_smc2+5 ; 25
|
||||
|
||||
sta write_ay_smc3+2 ; 26
|
||||
sta write_ay_smc3+5 ; 27
|
||||
|
||||
sta write_ay_smc4+2 ; 28
|
||||
sta write_ay_smc4+5 ; 29
|
||||
|
||||
sta write_ay_smc5+2 ; 30
|
||||
sta write_ay_smc5+5 ; 31
|
||||
|
||||
sta write_ay_smc6+2 ; 32
|
||||
sta write_ay_smc6+5 ; 33
|
||||
|
||||
sta setup_irq_smc1+2 ; 34
|
||||
sta setup_irq_smc2+2 ; 35
|
||||
sta setup_irq_smc3+2 ; 36
|
||||
sta setup_irq_smc4+2 ; 37
|
||||
sta setup_irq_smc5+2 ; 38
|
||||
sta setup_irq_smc6+2 ; 39
|
||||
|
||||
rts
|
||||
.endif
|
||||
|
||||
;===================================================================
|
||||
; dangerous code to patch mockingboard if not in slot#4
|
||||
;===================================================================
|
||||
; this code patches any $C4 value to the proper slot# if not slot4
|
||||
; this can be dangerous, it might over-write other important values
|
||||
; that should be $C4
|
||||
|
||||
; safer ways to do this:
|
||||
; only do this if 2 bytes after a LDA/STA/LDX/STX
|
||||
; count total and if not 39 then print error message
|
||||
|
||||
mockingboard_patch:
|
||||
; from mockingboard_init $1BBF
|
||||
; to done_pt3_irq_handler $1D85
|
||||
|
||||
ldx MB_ADDR_H
|
||||
ldy #0
|
||||
|
||||
lda #<mockingboard_init
|
||||
sta MB_ADDR_L
|
||||
lda #>mockingboard_init
|
||||
sta MB_ADDR_H
|
||||
|
||||
mb_patch_loop:
|
||||
lda (MB_ADDR_L),Y
|
||||
cmp #$C4
|
||||
bne mb_patch_nomatch
|
||||
|
||||
txa
|
||||
sta (MB_ADDR_L),Y
|
||||
mb_patch_nomatch:
|
||||
|
||||
; 16-bit increment
|
||||
|
||||
inc MB_ADDR_L
|
||||
bne mb_patch_oflo
|
||||
inc MB_ADDR_H
|
||||
|
||||
mb_patch_oflo:
|
||||
lda MB_ADDR_H
|
||||
cmp #>done_pt3_irq_handler
|
||||
bne mb_patch_loop
|
||||
lda MB_ADDR_L
|
||||
cmp #<done_pt3_irq_handler
|
||||
bne mb_patch_loop
|
||||
|
||||
mb_patch_done:
|
||||
stx MB_ADDR_H ; restore slot for later
|
||||
rts
|
||||
|
||||
|
|
@ -0,0 +1,295 @@
|
|||
; Mockingboad programming:
|
||||
; + Has two 6522 I/O chips connected to two AY-3-8910 chips
|
||||
; + Optionally has some speech chips controlled via the outport on the AY
|
||||
; + Often in slot 4
|
||||
; TODO: how to auto-detect?
|
||||
; References used:
|
||||
; http://macgui.com/usenet/?group=2&id=8366
|
||||
; 6522 Data Sheet
|
||||
; AY-3-8910 Data Sheet
|
||||
|
||||
;========================
|
||||
; Mockingboard card
|
||||
; Essentially two 6522s hooked to the Apple II bus
|
||||
; Connected to AY-3-8910 chips
|
||||
; PA0-PA7 on 6522 connected to DA0-DA7 on AY
|
||||
; PB0 on 6522 connected to BC1
|
||||
; PB1 on 6522 connected to BDIR
|
||||
; PB2 on 6522 connected to RESET
|
||||
|
||||
|
||||
; left speaker
|
||||
MOCK_6522_ORB1 = $C400 ; 6522 #1 port b data
|
||||
MOCK_6522_ORA1 = $C401 ; 6522 #1 port a data
|
||||
MOCK_6522_DDRB1 = $C402 ; 6522 #1 data direction port B
|
||||
MOCK_6522_DDRA1 = $C403 ; 6522 #1 data direction port A
|
||||
MOCK_6522_T1CL = $C404 ; 6522 #1 t1 low order latches
|
||||
MOCK_6522_T1CH = $C405 ; 6522 #1 t1 high order counter
|
||||
MOCK_6522_T1LL = $C406 ; 6522 #1 t1 low order latches
|
||||
MOCK_6522_T1LH = $C407 ; 6522 #1 t1 high order latches
|
||||
MOCK_6522_T2CL = $C408 ; 6522 #1 t2 low order latches
|
||||
MOCK_6522_T2CH = $C409 ; 6522 #1 t2 high order counters
|
||||
MOCK_6522_SR = $C40A ; 6522 #1 shift register
|
||||
MOCK_6522_ACR = $C40B ; 6522 #1 auxilliary control register
|
||||
MOCK_6522_PCR = $C40C ; 6522 #1 peripheral control register
|
||||
MOCK_6522_IFR = $C40D ; 6522 #1 interrupt flag register
|
||||
MOCK_6522_IER = $C40E ; 6522 #1 interrupt enable register
|
||||
MOCK_6522_ORANH = $C40F ; 6522 #1 port a data no handshake
|
||||
|
||||
|
||||
; right speaker
|
||||
MOCK_6522_ORB2 = $C480 ; 6522 #2 port b data
|
||||
MOCK_6522_ORA2 = $C481 ; 6522 #2 port a data
|
||||
MOCK_6522_DDRB2 = $C482 ; 6522 #2 data direction port B
|
||||
MOCK_6522_DDRA2 = $C483 ; 6522 #2 data direction port A
|
||||
|
||||
; AY-3-8910 commands on port B
|
||||
; RESET BDIR BC1
|
||||
MOCK_AY_RESET = $0 ; 0 0 0
|
||||
MOCK_AY_INACTIVE = $4 ; 1 0 0
|
||||
MOCK_AY_READ = $5 ; 1 0 1
|
||||
MOCK_AY_WRITE = $6 ; 1 1 0
|
||||
MOCK_AY_LATCH_ADDR = $7 ; 1 1 1
|
||||
|
||||
|
||||
;========================
|
||||
; Mockingboard Init
|
||||
;========================
|
||||
; Initialize the 6522s
|
||||
; set the data direction for all pins of PortA/PortB to be output
|
||||
|
||||
mockingboard_init:
|
||||
lda #$ff ; all output (1)
|
||||
|
||||
mock_init_smc1:
|
||||
sta MOCK_6522_DDRB1
|
||||
sta MOCK_6522_DDRA1
|
||||
mock_init_smc2:
|
||||
sta MOCK_6522_DDRB2
|
||||
sta MOCK_6522_DDRA2
|
||||
rts
|
||||
|
||||
;===================================
|
||||
;===================================
|
||||
; Reset Both AY-3-8910s
|
||||
;===================================
|
||||
;===================================
|
||||
|
||||
;======================
|
||||
; Reset Left AY-3-8910
|
||||
;======================
|
||||
reset_ay_both:
|
||||
lda #MOCK_AY_RESET
|
||||
reset_ay_smc1:
|
||||
sta MOCK_6522_ORB1
|
||||
lda #MOCK_AY_INACTIVE
|
||||
reset_ay_smc2:
|
||||
sta MOCK_6522_ORB1
|
||||
|
||||
;======================
|
||||
; Reset Right AY-3-8910
|
||||
;======================
|
||||
;reset_ay_right:
|
||||
;could be merged with both
|
||||
lda #MOCK_AY_RESET
|
||||
reset_ay_smc3:
|
||||
sta MOCK_6522_ORB2
|
||||
lda #MOCK_AY_INACTIVE
|
||||
reset_ay_smc4:
|
||||
sta MOCK_6522_ORB2
|
||||
rts
|
||||
|
||||
|
||||
; Write sequence
|
||||
; Inactive -> Latch Address -> Inactive -> Write Data -> Inactive
|
||||
|
||||
;=========================================
|
||||
; Write Right/Left to save value AY-3-8910
|
||||
;=========================================
|
||||
; register in X
|
||||
; value in MB_VALUE
|
||||
|
||||
write_ay_both:
|
||||
; address
|
||||
|
||||
write_ay_smc1:
|
||||
stx MOCK_6522_ORA1 ; put address on PA1 ; 4
|
||||
stx MOCK_6522_ORA2 ; put address on PA2 ; 4
|
||||
lda #MOCK_AY_LATCH_ADDR ; latch_address on PB1 ; 2
|
||||
write_ay_smc2:
|
||||
sta MOCK_6522_ORB1 ; latch_address on PB1 ; 4
|
||||
sta MOCK_6522_ORB2 ; latch_address on PB2 ; 4
|
||||
ldy #MOCK_AY_INACTIVE ; go inactive ; 2
|
||||
write_ay_smc3:
|
||||
sty MOCK_6522_ORB1 ; 4
|
||||
sty MOCK_6522_ORB2 ; 4
|
||||
;===========
|
||||
; 28
|
||||
; value
|
||||
lda MB_VALUE ; 3
|
||||
write_ay_smc4:
|
||||
sta MOCK_6522_ORA1 ; put value on PA1 ; 4
|
||||
sta MOCK_6522_ORA2 ; put value on PA2 ; 4
|
||||
lda #MOCK_AY_WRITE ; ; 2
|
||||
write_ay_smc5:
|
||||
sta MOCK_6522_ORB1 ; write on PB1 ; 4
|
||||
sta MOCK_6522_ORB2 ; write on PB2 ; 4
|
||||
write_ay_smc6:
|
||||
sty MOCK_6522_ORB1 ; 4
|
||||
sty MOCK_6522_ORB2 ; 4
|
||||
;===========
|
||||
; 29
|
||||
|
||||
rts ; 6
|
||||
;===========
|
||||
; 63
|
||||
write_ay_both_end:
|
||||
;.assert >write_ay_both = >write_ay_both_end, error, "write_ay_both crosses page"
|
||||
|
||||
;=======================================
|
||||
; clear ay -- clear all 14 AY registers
|
||||
; should silence the card
|
||||
;=======================================
|
||||
; 7+(74*14)+5=1048
|
||||
clear_ay_both:
|
||||
ldx #13 ; 2
|
||||
lda #0 ; 2
|
||||
sta MB_VALUE ; 3
|
||||
clear_ay_left_loop:
|
||||
jsr write_ay_both ; 6+63
|
||||
dex ; 2
|
||||
bpl clear_ay_left_loop ; 3
|
||||
; -1
|
||||
rts ; 6
|
||||
|
||||
|
||||
|
||||
;=======================================
|
||||
; mute AY -- just turn off all 3 channels
|
||||
; should silence the card
|
||||
;
|
||||
;=======================================
|
||||
mute_ay_both:
|
||||
ldx #7 ;
|
||||
lda #$FF ;
|
||||
sta MB_VALUE ;
|
||||
mute_ay_left_loop:
|
||||
jsr write_ay_both ;
|
||||
|
||||
rts ;
|
||||
|
||||
;=======================================
|
||||
; unmute AY
|
||||
; restore to value we had before muting
|
||||
;=======================================
|
||||
unmute_ay_both:
|
||||
ldx #7 ;
|
||||
lda ENABLE ;
|
||||
sta MB_VALUE ;
|
||||
unmute_ay_left_loop:
|
||||
jsr write_ay_both ;
|
||||
|
||||
rts ;
|
||||
|
||||
|
||||
|
||||
|
||||
clear_ay_end:
|
||||
;.assert >clear_ay_both = >clear_ay_end, error, "clear_ay_both crosses page"
|
||||
|
||||
;=============================
|
||||
; Setup
|
||||
;=============================
|
||||
mockingboard_setup_interrupt:
|
||||
|
||||
|
||||
; for this game with things in language card including
|
||||
; irq handler, always force IIc mode (where RAM swapped in
|
||||
; and we put the irq handler address directly up at $FFFE)
|
||||
|
||||
lda #<interrupt_handler
|
||||
sta $fffe
|
||||
lda #>interrupt_handler
|
||||
sta $ffff
|
||||
|
||||
; note elsewhere we put gs_interrupt_handler in $3FE/$3FF
|
||||
|
||||
; nop out the "lda $45" since we are bypassing the ROM irq handler
|
||||
; that puts A in $45
|
||||
lda #$EA
|
||||
sta interrupt_smc
|
||||
sta interrupt_smc+1
|
||||
|
||||
|
||||
;=========================
|
||||
; Setup Interrupt Handler
|
||||
;=========================
|
||||
; Vector address goes to 0x3fe/0x3ff
|
||||
; FIXME: should chain any existing handler
|
||||
|
||||
; lda #<interrupt_handler
|
||||
; sta $03fe
|
||||
; lda #>interrupt_handler
|
||||
; sta $03ff
|
||||
|
||||
;============================
|
||||
; Enable 50Hz clock on 6522
|
||||
;============================
|
||||
|
||||
|
||||
; Note, on Apple II the clock isn't 1MHz but is actually closer to
|
||||
; roughly 1.023MHz, and every 65th clock is stretched (it's complicated)
|
||||
|
||||
; 4fe7 / 1.023e6 = .020s, 50Hz
|
||||
; 9c40 / 1.023e6 = .040s, 25Hz
|
||||
; 411a / 1.023e6 = .016s, 60Hz
|
||||
|
||||
; French Touch uses
|
||||
; 4e20 / 1.000e6 = .020s, 50Hz, which assumes 1MHz clock freq
|
||||
|
||||
sei ; disable interrupts just in case
|
||||
|
||||
lda #$40 ; Continuous interrupts, don't touch PB7
|
||||
setup_irq_smc1:
|
||||
sta MOCK_6522_ACR ; ACR register
|
||||
lda #$7F ; clear all interrupt flags
|
||||
setup_irq_smc2:
|
||||
sta MOCK_6522_IER ; IER register (interrupt enable)
|
||||
|
||||
lda #$C0
|
||||
setup_irq_smc3:
|
||||
sta MOCK_6522_IFR ; IFR: 1100, enable interrupt on timer one oflow
|
||||
setup_irq_smc4:
|
||||
sta MOCK_6522_IER ; IER: 1100, enable timer one interrupt
|
||||
|
||||
lda #$E7
|
||||
; lda #$20
|
||||
setup_irq_smc5:
|
||||
sta MOCK_6522_T1CL ; write into low-order latch
|
||||
lda #$4f
|
||||
; lda #$4E
|
||||
setup_irq_smc6:
|
||||
sta MOCK_6522_T1CH ; write into high-order latch,
|
||||
; load both values into counter
|
||||
; clear interrupt and start counting
|
||||
|
||||
rts
|
||||
|
||||
|
||||
|
||||
;=============================
|
||||
; Disable Interrupt
|
||||
;=============================
|
||||
mockingboard_disable_interrupt:
|
||||
|
||||
sei ; disable interrupts just in case
|
||||
|
||||
lda #$40 ; Continuous interrupts, don't touch PB7
|
||||
disable_irq_smc1:
|
||||
sta MOCK_6522_ACR ; ACR register
|
||||
lda #$7F ; clear all interrupt flags
|
||||
disable_irq_smc2:
|
||||
sta MOCK_6522_IER ; IER register (interrupt enable)
|
||||
|
||||
rts
|
||||
|
||||
|
|
@ -0,0 +1,8 @@
|
|||
seek = $1126
|
||||
driveon = $119D
|
||||
driveoff = $1122
|
||||
load_new = $11AB
|
||||
load_address=$11C4
|
||||
load_track=load_address+1
|
||||
load_sector=load_address+2
|
||||
load_length=load_address+3
|
||||
|
|
@ -0,0 +1,244 @@
|
|||
; fast seek/multi-read
|
||||
; copyright (c) Peter Ferrie 2015-16
|
||||
|
||||
; Paramaters for loading QLOAD
|
||||
|
||||
sectors = 14 ; user-defined
|
||||
firsttrk = 1 ; user-defined, first track to read
|
||||
firstsec = 0 ; user-defined, first sector to read
|
||||
address = $12 ; user-defined
|
||||
entry = $1200 ; user-defined
|
||||
version = 1
|
||||
|
||||
;memory usage:
|
||||
;256 bytes ($200-2ff) static table
|
||||
grouped = $200
|
||||
|
||||
; stay away from interrupt vectors at $3fe !!!
|
||||
|
||||
;106 bytes ($300-369) static table
|
||||
preshift = $300
|
||||
zvalue = $fd ; only during init
|
||||
znibble = $fe ; only during init
|
||||
zmask = $ff ; only during init
|
||||
|
||||
WHICH_SLOT = $DA
|
||||
|
||||
; $26/$27 sector read location (ROM)
|
||||
; $3D sector number (ROM)
|
||||
|
||||
|
||||
; at entry (at least on AppleWin) A=1, X=60 (slot<<4), Y=0
|
||||
; qkumba says cffa cards leave Y at $10
|
||||
; 26/27 = 00/09
|
||||
; 3D = 1
|
||||
|
||||
; For Disk II booting, the firmware loads track0/sector0
|
||||
; to $800 and then jumps to $801
|
||||
|
||||
.org $800
|
||||
.byte 1 ; number of sectors for ROM to load
|
||||
|
||||
boot_entry:
|
||||
; this code loads two sectors up to $10/$11
|
||||
|
||||
; assume A=1 coming in here
|
||||
|
||||
lsr ; check sector number
|
||||
; A=0, carry=1
|
||||
tay ; Y=0
|
||||
adc #$0f ; A=$10 (destintation)
|
||||
|
||||
sta $27 ; set or update address as needed
|
||||
cmp #$12
|
||||
; 10 11 12 (1 1 1)
|
||||
; be, bf, c0 (1011 1011 1100)
|
||||
; so if hit $c000 we are done
|
||||
|
||||
beq done_load_2 ; branch if loaded 2
|
||||
|
||||
inc $3d ; increment sector (faster to find)
|
||||
|
||||
; call to the read routine in proper slot
|
||||
; using rts to jump indirect to
|
||||
; $CX5C
|
||||
|
||||
; this routine reads sector in $3D on track in $41
|
||||
; to address in $26/$27
|
||||
; when it's done it jumps back to $801
|
||||
stx WHICH_SLOT ; save for later
|
||||
|
||||
txa ; x is slot# << 4
|
||||
lsr
|
||||
lsr
|
||||
lsr
|
||||
lsr
|
||||
ora #$c0 ; slot to PROM base
|
||||
pha
|
||||
lda #$5b ;read-1
|
||||
pha
|
||||
rts ; return used to call $CX5C in DISK II ROM
|
||||
|
||||
done_load_2:
|
||||
|
||||
; patch self modifying code for Q6L read
|
||||
|
||||
txa
|
||||
ora #$8c ; slot to Q6L
|
||||
; Q6L?
|
||||
; if slot 6, after this A is $EC
|
||||
; Y should be 2 here
|
||||
patch_loop:
|
||||
iny
|
||||
ldx patchtbl-3, Y
|
||||
sta code_begin, X ; replace placeholders with Q6L
|
||||
; BE02 = EC? lda c0ec
|
||||
; so sets to c08c (Q6L)
|
||||
|
||||
bne patch_loop
|
||||
|
||||
; patch self-modifying code for turning motor off
|
||||
|
||||
and #$f8 ; MOTOROFF (c088) -> c0e8
|
||||
sta slotpatch7+1
|
||||
|
||||
; patch self-modifying code for turning motor on
|
||||
clc
|
||||
adc #1 ; MOTORON (c089) -> c0e9
|
||||
sta slotpatch9+1
|
||||
|
||||
; patch self-modifying code for phase off
|
||||
|
||||
eor #9 ; PHASEOFF (c080)
|
||||
sta slotpatch8+1
|
||||
|
||||
ldx #$3f
|
||||
stx zmask
|
||||
inx
|
||||
ldy #$7f
|
||||
|
||||
bne skip_ahead ; branch always
|
||||
|
||||
; pad with zeros until $839
|
||||
; $839 is the entry point
|
||||
; adjusts address at $8FE to be entry point
|
||||
; jumps to boot 2
|
||||
;.res $839-*
|
||||
|
||||
; lda #>(entry-1)
|
||||
; pha
|
||||
; lda #<(entry-1)
|
||||
; pha
|
||||
; jsr preread
|
||||
; jmp $1000 ; stage2 entry point
|
||||
|
||||
patchtbl:
|
||||
.byte <(slotpatch1+1), <(slotpatch2+1), <(slotpatch3+1)
|
||||
.byte <(slotpatch4+1), <(slotpatch5+1), <(slotpatch6+1)
|
||||
indextbl: ;the 0 also terminates the patchtbl list!
|
||||
.byte 0, 2, 1, 3
|
||||
|
||||
|
||||
;construct denibbilisation table
|
||||
;pre-shifted for interleave read
|
||||
|
||||
skip_ahead:
|
||||
loopaa:
|
||||
sty znibble
|
||||
tya
|
||||
asl
|
||||
bit znibble
|
||||
beq loopz
|
||||
ora znibble
|
||||
eor #$ff
|
||||
and #$7e
|
||||
loopa:
|
||||
bcs loopz
|
||||
lsr
|
||||
bne loopa
|
||||
dex
|
||||
txa
|
||||
asl
|
||||
asl
|
||||
sta preshift-$16, Y
|
||||
loopz:
|
||||
dey
|
||||
bne loopaa
|
||||
|
||||
;construct 2-bit group table
|
||||
|
||||
sty zvalue
|
||||
loopbb:
|
||||
lsr zmask
|
||||
lsr zmask
|
||||
loopb:
|
||||
lda indextbl, X
|
||||
sta grouped, Y
|
||||
inc zvalue
|
||||
lda zvalue
|
||||
and zmask
|
||||
bne loopy
|
||||
inx
|
||||
txa
|
||||
and #3
|
||||
tax
|
||||
loopy:
|
||||
iny
|
||||
iny
|
||||
iny
|
||||
iny
|
||||
cpy #3
|
||||
bcs loopb
|
||||
iny
|
||||
cpy #3
|
||||
bcc loopbb
|
||||
lda #>(entry-1)
|
||||
pha
|
||||
lda #<(entry-1)
|
||||
pha
|
||||
jsr preread
|
||||
|
||||
; seek backward support
|
||||
; sty startsec+1
|
||||
; sta tmpadr+1
|
||||
; stx total+1
|
||||
|
||||
jmp seekread
|
||||
|
||||
preread:
|
||||
|
||||
;copy post-read if necessary
|
||||
;push post-read address here
|
||||
; pla
|
||||
; tax
|
||||
; pla
|
||||
; tay
|
||||
; lda #>(postread-1)
|
||||
; pha
|
||||
; lda #<(postread-1)
|
||||
; pha
|
||||
; tya
|
||||
; pha
|
||||
; txa
|
||||
; pha
|
||||
|
||||
lda #<(firsttrk*2)
|
||||
sta phase+1
|
||||
ldx #sectors
|
||||
lda #address
|
||||
ldy #firstsec
|
||||
rts
|
||||
|
||||
|
||||
|
||||
end_code:
|
||||
|
||||
.res $8fe-*
|
||||
|
||||
; traditionally, entry point to jump to at end of loading
|
||||
; $1000 in this case
|
||||
;*=$8fe
|
||||
.byte $10, $00
|
||||
|
||||
|
||||
.include "qboot_stage2.s"
|
||||
|
|
@ -0,0 +1,382 @@
|
|||
; the following lives on sectors $0E and $0D
|
||||
; why?
|
||||
; request sector 2 and 4, and the interleave is
|
||||
|
||||
; beneath apple dos (3-23)
|
||||
; Physical (firmware) : 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
|
||||
; DOS33 mapping : 0, 7, 14, 6, 13, 5, 12, 4, 11, 3, 10, 2, 9, 1, 8, 15
|
||||
|
||||
|
||||
; Beneath Apple DOS
|
||||
; p86 (dos reference)
|
||||
;
|
||||
|
||||
;WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
|
||||
|
||||
WAIT = norom_wait
|
||||
|
||||
.org $1000
|
||||
|
||||
code_begin:
|
||||
|
||||
.byte version
|
||||
|
||||
readnib:
|
||||
slotpatch1: ; smc
|
||||
lda $c0d1 ; gets set to C08C (Q6L) read
|
||||
bpl readnib
|
||||
rts
|
||||
|
||||
;fill address array for one track
|
||||
seekread:
|
||||
sty startsec+1
|
||||
sta tmpadr+1
|
||||
stx total+1
|
||||
|
||||
inittrk:
|
||||
sec
|
||||
lda #$10
|
||||
sbc startsec+1
|
||||
cmp total+1
|
||||
bcs it_skip
|
||||
|
||||
tax
|
||||
|
||||
it_skip:
|
||||
stx partial1
|
||||
stx partial2
|
||||
jsr seek
|
||||
|
||||
startsec:
|
||||
ldy #$d1
|
||||
|
||||
tmpadr:
|
||||
tmpadr_loop:
|
||||
lda #$d1
|
||||
sta addrtbl, y
|
||||
inc tmpadr+1
|
||||
iny
|
||||
dec partial1
|
||||
bne tmpadr_loop
|
||||
|
||||
;====================================
|
||||
; read a sector
|
||||
;====================================
|
||||
; first address field
|
||||
;====================================
|
||||
; starts with $D5 $AA $96
|
||||
; then XX YY volume
|
||||
; then XX YY track
|
||||
; then XX YY sector
|
||||
; then XX YY checksum
|
||||
; then ends with $DE $AA $EB
|
||||
;====================================
|
||||
; data field
|
||||
;====================================
|
||||
; starts with $D5 $AA $AD
|
||||
; 342 bytes of data
|
||||
; XX checksum
|
||||
; ends with $DE $AA $EB
|
||||
read:
|
||||
|
||||
outer_read:
|
||||
jsr readnib
|
||||
inner_read:
|
||||
cmp #$d5 ; look for $D5 part of addr field
|
||||
bne outer_read
|
||||
|
||||
jsr readnib ; look for $D5 $AA
|
||||
cmp #$aa
|
||||
bne inner_read
|
||||
|
||||
; look for $D5 $AA $AD
|
||||
|
||||
tay ; we need Y=#$AA later
|
||||
jsr readnib
|
||||
eor #$ad ; zero A if match
|
||||
beq check_mode
|
||||
|
||||
; if not #$AD, then #$96 is assumed
|
||||
; so in address field
|
||||
|
||||
ldy #2 ; volume, track, sector
|
||||
another:
|
||||
jsr readnib
|
||||
rol ; set carry
|
||||
sta sector+1
|
||||
jsr readnib
|
||||
and sector+1
|
||||
dey
|
||||
bpl another
|
||||
|
||||
tay
|
||||
ldx addrtbl, Y ; fetch corresponding address
|
||||
beq read ; done?
|
||||
|
||||
sta sector+1 ; store index for later
|
||||
|
||||
stx adrpatch1+2
|
||||
stx adrpatch8+2
|
||||
stx adrpatch2+2
|
||||
stx adrpatch3+2
|
||||
stx adrpatch5+2
|
||||
stx adrpatch7+2
|
||||
|
||||
inx
|
||||
stx adrpatch9+2
|
||||
dex
|
||||
|
||||
dex
|
||||
stx adrpatch4+2
|
||||
stx adrpatch6+2
|
||||
|
||||
ldy #$fe
|
||||
|
||||
loop2:
|
||||
adrpatch1:
|
||||
lda $d102, Y
|
||||
pha
|
||||
iny
|
||||
bne loop2
|
||||
|
||||
branch_read:
|
||||
bcs read ; branch always
|
||||
|
||||
check_mode:
|
||||
cpx #0
|
||||
beq read ; loop if not expecting #$AD
|
||||
|
||||
loop33:
|
||||
sta tmpval+1 ; zero rolling checksum
|
||||
slotpatch2:
|
||||
loop4:
|
||||
ldx $c0d1
|
||||
bpl loop4
|
||||
lda preshift-$96, X
|
||||
adrpatch2:
|
||||
sta $d102, Y ; store 2-bit array
|
||||
|
||||
tmpval:
|
||||
eor #$d1
|
||||
iny
|
||||
bne loop33
|
||||
ldy #$aa
|
||||
slotpatch3:
|
||||
loop5:
|
||||
ldx $c0d1
|
||||
bpl loop5
|
||||
eor preshift-$96, X
|
||||
adrpatch3:
|
||||
ldx $d102, Y ; bit2tbl
|
||||
eor grouped+2, X ; first 86 nibbles use group bits 0-1
|
||||
adrpatch4:
|
||||
sta $d156, y
|
||||
iny
|
||||
bne loop5
|
||||
and #$fc
|
||||
ldy #$aa
|
||||
slotpatch4:
|
||||
loop6:
|
||||
ldx $c0d1
|
||||
bpl loop6
|
||||
eor preshift-$96, X
|
||||
adrpatch5:
|
||||
ldx $d102, Y ; bit2tbl
|
||||
eor grouped+1, X ; second 86 nibbles use group bits 2-3
|
||||
adrpatch6:
|
||||
sta $d1ac, Y
|
||||
iny
|
||||
bne loop6
|
||||
and #$fc
|
||||
ldx #$ac
|
||||
slotpatch5:
|
||||
loop7:
|
||||
ldy $c0d1
|
||||
bpl loop7
|
||||
eor preshift-$96, Y
|
||||
adrpatch7:
|
||||
ldy $d100, X ; bit2tbl
|
||||
eor grouped, Y ; last 84 nibbles use group bits 4-5
|
||||
adrpatch8:
|
||||
sta $d100, x
|
||||
inx
|
||||
bne loop7
|
||||
and #$fc
|
||||
slotpatch6:
|
||||
loop8:
|
||||
ldy $c0d1
|
||||
bpl loop8
|
||||
eor preshift-$96, Y
|
||||
cmp #1 ; carry = !zero
|
||||
ldy #1
|
||||
loop9:
|
||||
pla
|
||||
adrpatch9:
|
||||
sta $d100, Y
|
||||
dey
|
||||
bpl loop9
|
||||
branch_read2:
|
||||
bcs branch_read ; branch if checksum failure
|
||||
|
||||
sector:
|
||||
ldy #$d1
|
||||
txa
|
||||
sta addrtbl, Y ; zero corresponding address
|
||||
dec total+1
|
||||
dec partial2 ; adjust remaining count
|
||||
; (faster than looping over array)
|
||||
sec
|
||||
bne branch_read2 ; read all requested sectors in one track
|
||||
|
||||
sta startsec+1 ; this was missing from original code
|
||||
; leading to trouble on wrap around
|
||||
; it not starting at sector0
|
||||
total:
|
||||
ldx #$d1
|
||||
beq driveoff
|
||||
inc phase+1
|
||||
inc phase+1 ; update current track
|
||||
jmp inittrk
|
||||
|
||||
driveoff:
|
||||
slotpatch7:
|
||||
lda $c0d1
|
||||
|
||||
seekret:
|
||||
rts
|
||||
|
||||
seek:
|
||||
ldx #0
|
||||
stx step+1
|
||||
copy_cur:
|
||||
curtrk:
|
||||
lda #0
|
||||
sta tmpval+1
|
||||
sec
|
||||
phase:
|
||||
sbc #$d1
|
||||
beq seekret
|
||||
|
||||
; if seek backwards
|
||||
bcs sback
|
||||
|
||||
eor #$ff
|
||||
inc curtrk+1
|
||||
|
||||
bcc ssback
|
||||
sback:
|
||||
adc #$fe
|
||||
dec curtrk+1
|
||||
ssback:
|
||||
cmp step+1
|
||||
bcc loop10
|
||||
step:
|
||||
lda #$d1
|
||||
loop10:
|
||||
cmp #8
|
||||
bcs loop11
|
||||
tay
|
||||
sec
|
||||
loop11:
|
||||
lda curtrk+1
|
||||
ldx step1, Y
|
||||
bne loop12
|
||||
loopmmm:
|
||||
clc
|
||||
lda tmpval+1
|
||||
ldx step2, Y
|
||||
loop12:
|
||||
stx sector+1
|
||||
and #3
|
||||
rol
|
||||
tax
|
||||
slotpatch8:
|
||||
sta $c0d1, X
|
||||
loopmm:
|
||||
ldx #$13
|
||||
loopm:
|
||||
dex
|
||||
bne loopm
|
||||
dec sector+1
|
||||
bne loopmm
|
||||
lsr
|
||||
bcs loopmmm
|
||||
inc step+1
|
||||
bne copy_cur
|
||||
|
||||
step1: .byte 1, $30, $28, $24, $20, $1e, $1d, $1c
|
||||
step2: .byte $70, $2c, $26, $22, $1f, $1e, $1d, $1c
|
||||
addrtbl: .res 16
|
||||
|
||||
partial1: .byte $00
|
||||
partial2: .byte $00
|
||||
code_end:
|
||||
|
||||
|
||||
;==========================
|
||||
; enable drive motor
|
||||
;==========================
|
||||
|
||||
driveon:
|
||||
|
||||
slotpatch9:
|
||||
lda $c0d1
|
||||
|
||||
; wait 1s
|
||||
|
||||
ldx #6
|
||||
wait_1s:
|
||||
lda #255
|
||||
jsr WAIT
|
||||
dex
|
||||
bne wait_1s
|
||||
|
||||
rts
|
||||
|
||||
load_new:
|
||||
|
||||
jsr driveon
|
||||
|
||||
lda load_track
|
||||
asl ; track to start*2
|
||||
sta phase+1
|
||||
|
||||
lda load_sector
|
||||
tay ; sector to start
|
||||
|
||||
lda load_length ; length
|
||||
tax
|
||||
|
||||
lda load_address ; address to load
|
||||
|
||||
jsr seekread
|
||||
|
||||
rts
|
||||
|
||||
load_address:
|
||||
.byte $00
|
||||
load_track:
|
||||
.byte $00
|
||||
load_sector:
|
||||
.byte $00
|
||||
load_length:
|
||||
.byte $00
|
||||
|
||||
|
||||
|
||||
; copy of ROM wait
|
||||
; because we might disable ROM
|
||||
|
||||
norom_wait:
|
||||
sec
|
||||
wait2:
|
||||
pha
|
||||
wait3:
|
||||
sbc #$01
|
||||
bne wait3
|
||||
pla
|
||||
sbc #$01
|
||||
bne wait2
|
||||
rts
|
||||
wait_end:
|
||||
|
||||
|
|
@ -0,0 +1,208 @@
|
|||
; Loader
|
||||
|
||||
.include "zp.inc"
|
||||
.include "hardware.inc"
|
||||
.include "music.inc"
|
||||
|
||||
;.include "common_defines.inc"
|
||||
.include "qboot.inc"
|
||||
|
||||
qload_start:
|
||||
|
||||
; init the write code
|
||||
; lda WHICH_SLOT
|
||||
; jsr popwr_init
|
||||
|
||||
; first time entry
|
||||
; start by loading text title
|
||||
|
||||
; lda #0 ; load ZW engine
|
||||
; sta WHICH_LOAD
|
||||
|
||||
lda #1
|
||||
sta CURRENT_DISK ; current disk number
|
||||
|
||||
; jsr load_file
|
||||
|
||||
jmp xmas_start
|
||||
|
||||
; jmp $2000 ; jump to ZW
|
||||
|
||||
;====================================
|
||||
; loads file specified by WHICH_LOAD
|
||||
;====================================
|
||||
load_file:
|
||||
ldx WHICH_LOAD
|
||||
|
||||
lda which_disk_array,X
|
||||
cmp CURRENT_DISK
|
||||
bne change_disk
|
||||
|
||||
load_file_no_diskcheck:
|
||||
lda load_address_array,X
|
||||
sta load_address
|
||||
|
||||
lda track_array,X
|
||||
sta load_track
|
||||
|
||||
lda sector_array,X
|
||||
sta load_sector
|
||||
|
||||
lda length_array,X
|
||||
sta load_length
|
||||
|
||||
jsr load_new
|
||||
|
||||
rts
|
||||
|
||||
;===================================================
|
||||
;===================================================
|
||||
; change disk
|
||||
;===================================================
|
||||
;===================================================
|
||||
|
||||
change_disk:
|
||||
.if 0
|
||||
; turn off disk drive light
|
||||
|
||||
jsr driveoff
|
||||
|
||||
jsr TEXT
|
||||
jsr HOME
|
||||
|
||||
lda #<error_string
|
||||
sta OUTL
|
||||
lda #>error_string
|
||||
sta OUTH
|
||||
|
||||
ldx WHICH_LOAD
|
||||
lda which_disk_array,X
|
||||
clc
|
||||
adc #48
|
||||
|
||||
ldy #19
|
||||
sta (OUTL),Y
|
||||
|
||||
ldy #0
|
||||
|
||||
quick_print:
|
||||
lda (OUTL),Y
|
||||
beq quick_print_done
|
||||
jsr COUT1
|
||||
iny
|
||||
jmp quick_print
|
||||
|
||||
quick_print_done:
|
||||
|
||||
fnf_keypress:
|
||||
lda KEYPRESS
|
||||
bpl fnf_keypress
|
||||
bit KEYRESET
|
||||
|
||||
;==============================================
|
||||
; actually verify proper disk is there
|
||||
; read T0:S0 and verify proper disk
|
||||
|
||||
lda WHICH_LOAD
|
||||
pha
|
||||
|
||||
ldx #LOAD_FIRST_SECTOR ; load track 0 sector 0
|
||||
stx WHICH_LOAD
|
||||
|
||||
jsr load_file_no_diskcheck
|
||||
|
||||
pla
|
||||
sta WHICH_LOAD
|
||||
tax
|
||||
|
||||
; first sector now in $c00
|
||||
; offset 59
|
||||
; disk1 = $0a
|
||||
; disk2 = $32 ('2')
|
||||
; disk3 = $33 ('3')
|
||||
|
||||
lda $c59
|
||||
cmp #$0a
|
||||
beq is_disk1
|
||||
cmp #$32
|
||||
beq is_disk2
|
||||
cmp #$33
|
||||
beq is_disk3
|
||||
bne change_disk ; unknown disk
|
||||
|
||||
is_disk1:
|
||||
lda #1
|
||||
bne disk_compare
|
||||
|
||||
is_disk2:
|
||||
lda #2
|
||||
bne disk_compare
|
||||
|
||||
is_disk3:
|
||||
lda #3
|
||||
|
||||
disk_compare:
|
||||
cmp which_disk_array,X
|
||||
bne change_disk ; disk mismatch
|
||||
|
||||
;==============================================
|
||||
; all good, retry original load
|
||||
|
||||
jsr HOME
|
||||
|
||||
ldx WHICH_LOAD
|
||||
lda which_disk_array,X
|
||||
sta CURRENT_DISK
|
||||
|
||||
jmp load_file
|
||||
|
||||
; offset for disk number is 19
|
||||
error_string:
|
||||
.byte "PLEASE INSERT DISK 1, PRESS RETURN",0
|
||||
|
||||
.endif
|
||||
|
||||
which_disk_array:
|
||||
.byte 1,1 ; MUSIC, XMAS
|
||||
|
||||
load_address_array:
|
||||
.byte $D0,$80 ; MUSIC, XMAS
|
||||
|
||||
start_address:
|
||||
.byte $D0,$80 ; MUSIC, XMAS
|
||||
|
||||
track_array:
|
||||
.byte 4,12 ; MUSIC, XMAS
|
||||
|
||||
sector_array:
|
||||
.byte 0,0 ; MUSIC, XMAS
|
||||
|
||||
length_array:
|
||||
.byte 32,32 ; MUSIC, XMAS
|
||||
|
||||
PT3_ENABLE_APPLE_IIC = 1
|
||||
|
||||
.include "wait.s"
|
||||
|
||||
.include "start.s"
|
||||
|
||||
.include "lc_detect.s"
|
||||
|
||||
.include "wait_a_bit.s"
|
||||
.include "gr_fast_clear.s"
|
||||
.include "text_print.s"
|
||||
.include "gr_offsets.s"
|
||||
|
||||
.include "pt3_lib_detect_model.s"
|
||||
.include "pt3_lib_mockingboard_detect.s"
|
||||
|
||||
mod7_table = $1c00
|
||||
div7_table = $1d00
|
||||
hposn_low = $1e00
|
||||
hposn_high = $1f00
|
||||
|
||||
.include "hgr_table.s"
|
||||
|
||||
qload_end:
|
||||
|
||||
.assert (>qload_end - >qload_start) < $e , error, "loader too big"
|
||||
|
|
@ -0,0 +1,152 @@
|
|||
; XMAS 2023
|
||||
|
||||
;
|
||||
; by deater (Vince Weaver) <vince@deater.net>
|
||||
|
||||
|
||||
|
||||
xmas_start:
|
||||
jmp xmas_start
|
||||
|
||||
;=====================
|
||||
; initializations
|
||||
;=====================
|
||||
|
||||
jsr hardware_detect
|
||||
|
||||
jsr hgr_make_tables
|
||||
|
||||
|
||||
;===================
|
||||
; restart?
|
||||
;===================
|
||||
restart:
|
||||
lda #0
|
||||
sta DRAW_PAGE
|
||||
|
||||
|
||||
;==================================
|
||||
; load music into the language card
|
||||
; into $D000 set 1
|
||||
;==================================
|
||||
|
||||
; read/write RAM, use $d000 bank1
|
||||
bit $C083
|
||||
bit $C083
|
||||
|
||||
lda #0 ; load MUSIC from disk
|
||||
sta WHICH_LOAD
|
||||
|
||||
jsr load_file
|
||||
|
||||
lda #0
|
||||
sta DONE_PLAYING
|
||||
|
||||
lda #1
|
||||
sta LOOP
|
||||
|
||||
; patch mockingboard
|
||||
|
||||
lda SOUND_STATUS
|
||||
beq skip_mbp1
|
||||
|
||||
jsr mockingboard_patch ; patch to work in slots other than 4?
|
||||
|
||||
skip_mbp1:
|
||||
|
||||
;=======================
|
||||
; Set up 50Hz interrupt
|
||||
;========================
|
||||
|
||||
jsr mockingboard_init
|
||||
jsr mockingboard_setup_interrupt
|
||||
|
||||
;============================
|
||||
; Init the Mockingboard
|
||||
;============================
|
||||
|
||||
jsr reset_ay_both
|
||||
jsr clear_ay_both
|
||||
|
||||
;==================
|
||||
; init song
|
||||
;==================
|
||||
|
||||
jsr pt3_init_song
|
||||
|
||||
dont_enable_mc:
|
||||
|
||||
skip_all_checks:
|
||||
|
||||
|
||||
;=======================
|
||||
;=======================
|
||||
; Load intro
|
||||
;=======================
|
||||
;=======================
|
||||
|
||||
; load from disk
|
||||
|
||||
lda #1 ; XMAS
|
||||
sta WHICH_LOAD
|
||||
jsr load_file
|
||||
|
||||
;=======================
|
||||
;=======================
|
||||
; Run intro
|
||||
;=======================
|
||||
;=======================
|
||||
|
||||
cli ; start music
|
||||
|
||||
jsr $8000
|
||||
|
||||
|
||||
|
||||
|
||||
; bit PAGE1 ; be sure we're on PAGE1
|
||||
|
||||
; clear text screen
|
||||
; lda #$A0
|
||||
; sta clear_all_color+1
|
||||
; jsr clear_all
|
||||
|
||||
; switch to text/gr
|
||||
; bit TEXTGR
|
||||
|
||||
; print non-inverse
|
||||
|
||||
; jsr set_normal
|
||||
|
||||
; print messages
|
||||
; lda #<disk_change_string
|
||||
; sta OUTL
|
||||
; lda #>disk_change_string
|
||||
; sta OUTH
|
||||
|
||||
; print the text
|
||||
|
||||
; jsr move_and_print
|
||||
|
||||
; bit KEYRESET ; just to be safe
|
||||
; jsr wait_until_keypress
|
||||
|
||||
|
||||
forever:
|
||||
jmp forever
|
||||
|
||||
|
||||
.include "wait_keypress.s"
|
||||
.include "zx02_optim.s"
|
||||
|
||||
.include "gs_interrupt.s"
|
||||
|
||||
;.include "title.s"
|
||||
|
||||
disk_change_string:
|
||||
; 0123456789012345678901234567890123456789
|
||||
;.byte 5,22,"INSERT DISK 2 AND PRESS ANY KEY",0
|
||||
|
||||
.include "pt3_lib_mockingboard_patch.s"
|
||||
|
||||
.include "hardware_detect.s"
|
||||
|
|
@ -0,0 +1,93 @@
|
|||
|
||||
;================================
|
||||
; move_and_print
|
||||
;================================
|
||||
; get X,Y from OUTL/OUTH
|
||||
; then print following string to that address
|
||||
; stop at NUL
|
||||
; convert to APPLE ASCII (or with 0x80)
|
||||
; leave OUTL/OUTH pointing to next string
|
||||
|
||||
move_and_print:
|
||||
ldy #0
|
||||
lda (OUTL),Y
|
||||
sta CH
|
||||
iny
|
||||
lda (OUTL),Y
|
||||
asl
|
||||
tay
|
||||
lda gr_offsets,Y ; lookup low-res memory address
|
||||
clc
|
||||
adc CH ; add in xpos
|
||||
sta BASL ; store out low byte of addy
|
||||
|
||||
lda gr_offsets+1,Y ; look up high byte
|
||||
adc DRAW_PAGE ;
|
||||
sta BASH ; and store it out
|
||||
; BASH:BASL now points at right place
|
||||
|
||||
clc
|
||||
lda OUTL
|
||||
adc #2
|
||||
sta OUTL
|
||||
lda OUTH
|
||||
adc #0
|
||||
sta OUTH
|
||||
|
||||
;================================
|
||||
; print_string
|
||||
;================================
|
||||
|
||||
print_string:
|
||||
ldy #0
|
||||
print_string_loop:
|
||||
lda (OUTL),Y
|
||||
beq done_print_string
|
||||
ps_smc1:
|
||||
and #$3f ; make sure we are inverse
|
||||
sta (BASL),Y
|
||||
iny
|
||||
bne print_string_loop
|
||||
done_print_string:
|
||||
iny
|
||||
clc
|
||||
tya
|
||||
adc OUTL
|
||||
sta OUTL
|
||||
lda OUTH
|
||||
adc #0
|
||||
sta OUTH
|
||||
|
||||
rts
|
||||
|
||||
; set normal text
|
||||
set_normal:
|
||||
lda #$80
|
||||
sta ps_smc1+1
|
||||
|
||||
lda #09 ; ora
|
||||
sta ps_smc1
|
||||
|
||||
rts
|
||||
|
||||
; restore inverse text
|
||||
set_inverse:
|
||||
lda #$29
|
||||
sta ps_smc1
|
||||
lda #$3f
|
||||
sta ps_smc1+1
|
||||
|
||||
rts
|
||||
|
||||
|
||||
;================================
|
||||
; move and print a list of lines
|
||||
;================================
|
||||
; look for negative X meaning done
|
||||
move_and_print_list:
|
||||
jsr move_and_print
|
||||
ldy #0
|
||||
lda (OUTL),Y
|
||||
bpl move_and_print_list
|
||||
|
||||
rts
|
||||
|
|
@ -0,0 +1,18 @@
|
|||
; copy of ROM wait
|
||||
; because we might disable ROM
|
||||
|
||||
|
||||
wait:
|
||||
sec
|
||||
wait2:
|
||||
pha
|
||||
wait3:
|
||||
sbc #$01
|
||||
bne wait3
|
||||
pla
|
||||
sbc #$01
|
||||
bne wait2
|
||||
rts
|
||||
wait_end:
|
||||
|
||||
.assert (>wait_end - >wait) < 1 , error, "wait crosses page boundary"
|
||||
|
|
@ -0,0 +1,37 @@
|
|||
;====================================
|
||||
; wait for keypress or a few seconds
|
||||
;====================================
|
||||
; A is length to wait
|
||||
|
||||
wait_a_bit:
|
||||
|
||||
bit KEYRESET
|
||||
tax
|
||||
|
||||
keyloop:
|
||||
lda #200 ; delay a bit
|
||||
jsr wait
|
||||
|
||||
lda KEYPRESS
|
||||
bmi done_keyloop
|
||||
|
||||
dex
|
||||
bne keyloop
|
||||
; beq no_escape
|
||||
|
||||
done_keyloop:
|
||||
|
||||
; and #$7f
|
||||
; cmp #27
|
||||
; bne no_escape
|
||||
|
||||
; inc ESC_PRESSED
|
||||
;no_escape:
|
||||
|
||||
bit KEYRESET
|
||||
|
||||
rts
|
||||
|
||||
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,5 @@
|
|||
wait_until_keypress:
|
||||
lda KEYPRESS ; 4
|
||||
bpl wait_until_keypress ; 3
|
||||
bit KEYRESET ; clear the keyboard buffer
|
||||
rts ; 6
|
||||
|
|
@ -0,0 +1,535 @@
|
|||
; XMAS
|
||||
|
||||
; PLASMAGORIA
|
||||
|
||||
; based on original code by French Touch
|
||||
|
||||
.include "hardware.inc"
|
||||
.include "zp.inc"
|
||||
.include "qload.inc"
|
||||
.include "music.inc"
|
||||
|
||||
; =============================================================================
|
||||
; ROUTINE MAIN
|
||||
; =============================================================================
|
||||
|
||||
plasma_main:
|
||||
|
||||
lda #$00
|
||||
sta DRAW_PAGE
|
||||
sta clear_all_color+1
|
||||
|
||||
lda #$04
|
||||
sta DRAW_PAGE
|
||||
jsr clear_all
|
||||
|
||||
|
||||
bit PAGE2 ; set page 2
|
||||
; bit SET_TEXT ; set text
|
||||
bit LORES ; set lo-res
|
||||
|
||||
lda #0
|
||||
sta FRAME
|
||||
|
||||
; load image offscreen $6000
|
||||
|
||||
lda #<mask1_data
|
||||
sta zx_src_l+1
|
||||
lda #>mask1_data
|
||||
sta zx_src_h+1
|
||||
lda #$60
|
||||
jsr zx02_full_decomp
|
||||
|
||||
; load image offscreen $6400
|
||||
|
||||
lda #<mask2_data
|
||||
sta zx_src_l+1
|
||||
lda #>mask2_data
|
||||
sta zx_src_h+1
|
||||
lda #$64
|
||||
jsr zx02_full_decomp
|
||||
|
||||
; load image offscreen $6800
|
||||
|
||||
lda #<mask3_data
|
||||
sta zx_src_l+1
|
||||
lda #>mask3_data
|
||||
sta zx_src_h+1
|
||||
lda #$68
|
||||
jsr zx02_full_decomp
|
||||
|
||||
; load image offscreen $6C00
|
||||
|
||||
lda #<mask4_data
|
||||
sta zx_src_l+1
|
||||
lda #>mask4_data
|
||||
sta zx_src_h+1
|
||||
lda #$6C
|
||||
jsr zx02_full_decomp
|
||||
|
||||
; load image offscreen $7000
|
||||
|
||||
lda #<mask5_data
|
||||
sta zx_src_l+1
|
||||
lda #>mask5_data
|
||||
sta zx_src_h+1
|
||||
lda #$70
|
||||
jsr zx02_full_decomp
|
||||
|
||||
; load image offscreen $7400
|
||||
|
||||
lda #<mask6_data
|
||||
sta zx_src_l+1
|
||||
lda #>mask6_data
|
||||
sta zx_src_h+1
|
||||
lda #$74
|
||||
jsr zx02_full_decomp
|
||||
|
||||
; load image offscreen $7800
|
||||
|
||||
lda #<mask7_data
|
||||
sta zx_src_l+1
|
||||
lda #>mask7_data
|
||||
sta zx_src_h+1
|
||||
lda #$78
|
||||
jsr zx02_full_decomp
|
||||
|
||||
; load image offscreen $7C00
|
||||
|
||||
lda #<mask8_data
|
||||
sta zx_src_l+1
|
||||
lda #>mask8_data
|
||||
sta zx_src_h+1
|
||||
lda #$7C
|
||||
jsr zx02_full_decomp
|
||||
|
||||
|
||||
|
||||
|
||||
; remap the masks
|
||||
; $00->$00
|
||||
; $11->$40
|
||||
; $22->$80
|
||||
; $44->$C0
|
||||
|
||||
|
||||
ldy #0
|
||||
sty OUTL
|
||||
lda #$60
|
||||
sta OUTH
|
||||
remap_mask:
|
||||
lda (OUTL),Y
|
||||
and #$7
|
||||
tax
|
||||
lda remap_table,X
|
||||
sta (OUTL),Y
|
||||
dey
|
||||
bne remap_mask
|
||||
|
||||
inc OUTH
|
||||
lda OUTH
|
||||
cmp #$80
|
||||
bne remap_mask
|
||||
|
||||
|
||||
step3:
|
||||
|
||||
; init
|
||||
|
||||
lda #02
|
||||
sta COMPT2
|
||||
sta PARAM1
|
||||
sta PARAM2
|
||||
sta PARAM3
|
||||
sta PARAM4
|
||||
|
||||
bp3:
|
||||
jsr precalc ; pre-calc
|
||||
jsr display_normal ; display normal
|
||||
jsr VBLANK
|
||||
|
||||
lda #60
|
||||
jsr wait_for_pattern
|
||||
bcc keep_making_plasma
|
||||
|
||||
jmp done_plasmacube
|
||||
|
||||
|
||||
keep_making_plasma:
|
||||
|
||||
|
||||
inc COMPT1
|
||||
bne bp3
|
||||
dec COMPT2
|
||||
bne bp3
|
||||
|
||||
jmp step3
|
||||
|
||||
|
||||
; ============================================================================
|
||||
; Precalculate some values
|
||||
; ROUTINES PRE CALCUL
|
||||
; ============================================================================
|
||||
precalc:
|
||||
lda PARAM1 ; self modify various parts
|
||||
sta pc_off1+1
|
||||
lda PARAM2
|
||||
sta pc_off2+1
|
||||
lda PARAM3
|
||||
sta pc_off3+1
|
||||
lda PARAM4
|
||||
sta pc_off4+1
|
||||
|
||||
; Table1(X) = sin1(PARAM1+X)+sin2(PARAM1+X)
|
||||
; Table2(X) = sin3(PARAM3+X)+sin1(PARAM4+X)
|
||||
|
||||
ldx #$28 ; 40
|
||||
pc_b1:
|
||||
pc_off1:
|
||||
lda sin1
|
||||
pc_off2:
|
||||
adc sin2
|
||||
sta Table1,X
|
||||
pc_off3:
|
||||
lda sin3
|
||||
pc_off4:
|
||||
adc sin1
|
||||
sta Table2,X
|
||||
|
||||
inc pc_off1+1
|
||||
inc pc_off2+1
|
||||
inc pc_off3+1
|
||||
inc pc_off4+1
|
||||
|
||||
dex
|
||||
bpl pc_b1
|
||||
|
||||
inc PARAM1
|
||||
inc PARAM1
|
||||
dec PARAM2
|
||||
inc PARAM3
|
||||
dec PARAM4
|
||||
|
||||
rts
|
||||
|
||||
; ============================================================================
|
||||
; Display Routines
|
||||
; ROUTINES AFFICHAGES
|
||||
; ============================================================================
|
||||
|
||||
; Display "Normal"
|
||||
; AFFICHAGE "NORMAL"
|
||||
|
||||
display_normal:
|
||||
bit SET_GR ; gfx (lores) why needed?
|
||||
|
||||
ldx #23 ; lines 0-23 lignes 0-23
|
||||
|
||||
display_line_loop:
|
||||
lda gr_lookup_low,X ; setup pointers for line
|
||||
sta GRLINE
|
||||
lda gr_lookup_high,X
|
||||
sta GRLINE+1
|
||||
|
||||
lda gr_lookup_low,X ; setup pointers for mask
|
||||
sta INL
|
||||
lda gr_lookup_high,X
|
||||
clc
|
||||
mask_src_smc:
|
||||
adc #($70-$8)
|
||||
sta INH
|
||||
|
||||
|
||||
ldy #39 ; col 0-39
|
||||
|
||||
lda Table2,X ; setup base sine value for row
|
||||
sta display_row_sin_smc+1
|
||||
display_col_loop:
|
||||
lda Table1,Y ; load in column sine value
|
||||
display_row_sin_smc:
|
||||
adc #00 ; add in row value
|
||||
|
||||
and #$3f
|
||||
ora (INL),Y
|
||||
|
||||
sta display_lookup_smc+1 ; patch in low byte of lookup
|
||||
display_lookup_smc:
|
||||
lda lores_colors_rgb ; attention: must be aligned
|
||||
|
||||
sta (GRLINE),Y
|
||||
dey
|
||||
bpl display_col_loop
|
||||
dex
|
||||
bpl display_line_loop
|
||||
|
||||
rts
|
||||
|
||||
|
||||
VBLANK:
|
||||
inc FRAME
|
||||
|
||||
lda FRAME
|
||||
lsr
|
||||
lsr
|
||||
lsr
|
||||
lsr
|
||||
and #$f
|
||||
tax
|
||||
lda mask_src_table,X
|
||||
sta mask_src_smc+1
|
||||
|
||||
rts
|
||||
|
||||
done_plasmacube:
|
||||
|
||||
rts
|
||||
|
||||
;.align 256
|
||||
|
||||
gr_lookup_low:
|
||||
.byte $00,$80,$00,$80,$00,$80,$00,$80
|
||||
.byte $28,$A8,$28,$A8,$28,$A8,$28,$A8
|
||||
.byte $50,$D0,$50,$D0,$50,$D0,$50,$D0
|
||||
|
||||
gr_lookup_high:
|
||||
.byte $08,$08,$09,$09,$0A,$0A,$0B,$0B
|
||||
.byte $08,$08,$09,$09,$0A,$0A,$0B,$0B
|
||||
.byte $08,$08,$09,$09,$0A,$0A,$0B,$0B
|
||||
|
||||
|
||||
|
||||
.align 256
|
||||
|
||||
|
||||
; This appears to be roughly 47+32*sin(x)+16*sin(2x)
|
||||
sin1: ; 256
|
||||
.byte $2E,$30,$32,$34,$35,$36,$38,$3A,$3C,$3C,$3E,$40,$41,$42,$44,$45,$47,$47,$49,$4A,$4B,$4C,$4D,$4E,$4F,$50,$51,$52,$53,$53,$54,$54
|
||||
.byte $55,$55,$56,$57,$57,$58,$58,$57,$58,$58,$58,$58,$58,$58,$58,$58,$58,$57,$57,$57,$56,$56,$55,$54,$55,$54,$53,$52,$52,$51,$50,$4F
|
||||
.byte $4E,$4E,$4D,$4C,$4B,$4B,$4A,$49,$48,$47,$46,$45,$45,$44,$42,$42,$41,$41,$3F,$3F,$3D,$3D,$3C,$3B,$3B,$39,$39,$39,$38,$38,$37,$36
|
||||
.byte $36,$35,$35,$34,$34,$33,$32,$32,$32,$31,$31,$31,$30,$31,$30,$30,$30,$30,$2F,$2F,$30,$2F,$2F,$2F,$2F,$2F,$2F,$2F,$2E,$2F,$2F,$2F
|
||||
.byte $2E,$2F,$2F,$2F,$2F,$2E,$2F,$2F,$2F,$2E,$2F,$2F,$2E,$2E,$2F,$2E,$2E,$2D,$2E,$2D,$2D,$2D,$2C,$2C,$2C,$2B,$2B,$2B,$2A,$2A,$29,$28
|
||||
.byte $28,$27,$27,$26,$26,$25,$25,$23,$23,$22,$21,$21,$20,$1F,$1F,$1D,$1D,$1C,$1B,$1A,$19,$19,$17,$16,$16,$15,$14,$13,$13,$12,$11,$10
|
||||
.byte $0F,$0F,$0E,$0D,$0C,$0C,$0B,$0A,$09,$09,$08,$08,$08,$07,$06,$07,$06,$06,$06,$06,$05,$06,$05,$05,$06,$05,$06,$06,$07,$07,$08,$08
|
||||
.byte $09,$09,$0A,$0B,$0B,$0C,$0C,$0D,$0F,$0F,$10,$12,$12,$14,$15,$16,$17,$19,$1A,$1B,$1D,$1E,$20,$21,$22,$24,$26,$27,$28,$2A,$2C,$2E
|
||||
|
||||
; This appears to be roughly 47+32*sin(4x)+16*sin(3x)
|
||||
sin2: ; 256
|
||||
.byte $2E,$33,$38,$3C,$40,$43,$47,$4B,$4E,$51,$54,$56,$59,$5A,$5C,$5D,$5D,$5E,$5E,$5D,$5C,$5A,$59,$57,$55,$53,$4F,$4C,$49,$46,$42,$3E
|
||||
.byte $3A,$36,$32,$2E,$2A,$26,$23,$1F,$1C,$18,$15,$12,$10,$0E,$0C,$0A,$09,$08,$07,$07,$07,$07,$09,$0A,$0B,$0D,$0F,$11,$13,$16,$19,$1C
|
||||
.byte $1F,$22,$26,$29,$2C,$2F,$32,$36,$38,$3B,$3E,$3F,$42,$44,$46,$47,$48,$49,$4B,$4B,$4B,$4A,$4A,$49,$49,$48,$46,$44,$43,$41,$3F,$3C
|
||||
.byte $3A,$38,$35,$33,$30,$2E,$2C,$2A,$28,$26,$24,$22,$21,$20,$1F,$1F,$1E,$1E,$1D,$1D,$1E,$1E,$1F,$20,$21,$22,$24,$25,$27,$29,$2B,$2D
|
||||
.byte $2E,$30,$33,$35,$37,$38,$3A,$3C,$3D,$3E,$3F,$3F,$40,$40,$41,$40,$40,$3F,$3F,$3E,$3D,$3B,$3A,$38,$36,$34,$31,$2F,$2D,$2B,$29,$25
|
||||
.byte $23,$21,$1F,$1D,$1B,$19,$18,$16,$15,$14,$14,$13,$13,$13,$13,$14,$16,$17,$18,$1A,$1C,$1D,$20,$23,$26,$28,$2C,$2E,$32,$35,$38,$3B
|
||||
.byte $3E,$41,$45,$48,$4B,$4C,$4F,$51,$53,$54,$55,$55,$57,$57,$57,$56,$55,$53,$52,$50,$4E,$4B,$49,$45,$42,$3F,$3B,$37,$34,$30,$2C,$27
|
||||
.byte $23,$1F,$1C,$18,$14,$11,$0E,$0B,$09,$07,$05,$03,$02,$01,$00,$00,$01,$01,$02,$03,$05,$07,$0A,$0D,$10,$13,$17,$1A,$1E,$22,$26,$2A
|
||||
|
||||
; This appears to be roughly 38+24*sin(3x)+16*sin(8x)
|
||||
sin3: ; 256
|
||||
.byte $26,$2C,$31,$35,$39,$3D,$40,$42,$44,$45,$45,$46,$45,$43,$42,$40,$3C,$3A,$38,$36,$33,$31,$30,$2F,$2F,$2E,$2F,$2F,$30,$33,$33,$36
|
||||
.byte $37,$3A,$3C,$3C,$3E,$3E,$3D,$3D,$3B,$39,$36,$34,$30,$2B,$28,$23,$1D,$19,$14,$11,$0C,$09,$07,$04,$03,$03,$03,$03,$04,$07,$09,$0C
|
||||
.byte $0F,$13,$16,$18,$1B,$1E,$20,$22,$22,$23,$24,$24,$23,$22,$21,$20,$1D,$1C,$1B,$1A,$19,$19,$19,$1A,$1C,$1E,$20,$23,$27,$2B,$2F,$33
|
||||
.byte $37,$3D,$40,$44,$47,$4A,$4C,$4D,$4E,$4E,$4D,$4C,$4A,$47,$45,$41,$3C,$39,$35,$32,$2E,$2B,$28,$26,$25,$23,$23,$22,$22,$24,$24,$25
|
||||
.byte $26,$29,$2A,$2A,$2B,$2C,$2B,$2B,$29,$28,$25,$23,$20,$1C,$19,$15,$10,$0D,$09,$07,$04,$02,$01,$00,$00,$00,$02,$03,$06,$0A,$0D,$11
|
||||
.byte $15,$1B,$1F,$23,$27,$2B,$2D,$30,$32,$33,$34,$35,$35,$33,$33,$32,$30,$2E,$2D,$2C,$2B,$2A,$2A,$2A,$2B,$2C,$2E,$30,$32,$36,$38,$3B
|
||||
.byte $3E,$42,$45,$47,$49,$4B,$4B,$4B,$4A,$49,$47,$45,$42,$3D,$3A,$35,$30,$2B,$26,$22,$1E,$1A,$17,$14,$13,$11,$10,$10,$10,$12,$12,$14
|
||||
.byte $15,$18,$1A,$1B,$1D,$1E,$1F,$1F,$1F,$1F,$1E,$1D,$1B,$18,$16,$14,$10,$0E,$0C,$0B,$09,$08,$08,$09,$0A,$0C,$0E,$11,$14,$19,$1D,$22
|
||||
|
||||
|
||||
; Lookup table for colors
|
||||
; Note the sine tables point roughly to the middle and go to the edges
|
||||
|
||||
|
||||
|
||||
lores_colors_rgb: ; 256
|
||||
|
||||
; black
|
||||
.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
|
||||
|
||||
; red gradient
|
||||
; $00, $11, $33, $BB, $FF, $BB, $33, $11
|
||||
|
||||
.byte $11,$11,$11,$11,$11,$11,$11,$11
|
||||
.byte $11,$11,$33,$33,$33,$33,$33,$33
|
||||
.byte $33,$33,$33,$33,$bb,$bb,$bb,$bb
|
||||
.byte $bb,$bb,$bb,$bb,$bb,$bb,$ff,$ff
|
||||
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
|
||||
.byte $bb,$bb,$bb,$bb,$bb,$bb,$bb,$bb
|
||||
.byte $bb,$bb,$33,$33,$33,$33,$33,$33
|
||||
.byte $33,$33,$33,$33,$11,$11,$11,$11
|
||||
|
||||
; red
|
||||
.if 0
|
||||
.byte $11,$11,$11,$11,$11,$33,$33,$33
|
||||
.byte $33,$33,$bb,$bb,$bb,$bb,$bb,$ff
|
||||
.byte $ff,$ff,$ff,$ff,$ff,$bb,$bb,$bb
|
||||
.byte $bb,$bb,$33,$33,$33,$33,$33,$11
|
||||
.byte $11,$11,$11,$11,$33,$33,$33,$33
|
||||
.byte $bb,$bb,$bb,$bb,$bb,$ff,$ff,$ff
|
||||
.byte $ff,$ff,$ff,$bb,$bb,$bb,$bb,$bb
|
||||
.byte $33,$33,$33,$33,$33,$33,$11,$11
|
||||
.endif
|
||||
|
||||
; $00, $22, $66, $77, $FF, $77, $66, $22
|
||||
|
||||
; 22 66 77 ff 77 66
|
||||
|
||||
; blue
|
||||
|
||||
|
||||
.byte $22,$22,$22,$22,$22,$22,$22,$22
|
||||
.byte $22,$22,$22,$66,$66,$66,$66,$66
|
||||
.byte $66,$66,$66,$66,$66,$66,$77,$77
|
||||
.byte $77,$77,$77,$77,$77,$77,$77,$77
|
||||
.byte $77,$ff,$ff,$ff,$ff,$ff,$ff,$ff
|
||||
.byte $ff,$ff,$ff,$ff,$77,$77,$77,$77
|
||||
.byte $77,$77,$77,$77,$77,$77,$77,$66
|
||||
.byte $66,$66,$66,$66,$66,$66,$66,$66
|
||||
|
||||
|
||||
.if 0
|
||||
.byte $22,$22,$22,$22,$22,$66,$66,$66
|
||||
.byte $66,$66,$77,$77,$77,$77,$77,$ff
|
||||
.byte $ff,$ff,$ff,$ff,$ff,$77,$77,$77
|
||||
.byte $77,$77,$66,$66,$66,$66,$66,$22
|
||||
.byte $22,$22,$22,$22,$66,$66,$66,$66
|
||||
.byte $77,$77,$77,$77,$77,$ff,$ff,$ff
|
||||
.byte $ff,$ff,$ff,$77,$77,$77,$77,$77
|
||||
.byte $66,$66,$66,$66,$66,$66,$22,$22
|
||||
.endif
|
||||
|
||||
|
||||
|
||||
; $00, $44, $CC, $DD, $FF, $DD, $CC, $44
|
||||
|
||||
; green
|
||||
.byte $44,$44,$44,$44,$44,$cc,$cc,$cc
|
||||
.byte $cc,$cc,$dd,$dd,$dd,$dd,$dd,$ff
|
||||
.byte $ff,$ff,$ff,$ff,$ff,$dd,$dd,$dd
|
||||
.byte $dd,$dd,$cc,$cc,$cc,$cc,$cc,$44
|
||||
.byte $44,$44,$44,$44,$cc,$cc,$cc,$cc
|
||||
.byte $dd,$dd,$dd,$dd,$dd,$ff,$ff,$ff
|
||||
.byte $ff,$ff,$ff,$dd,$dd,$dd,$dd,$dd
|
||||
.byte $cc,$cc,$cc,$cc,$cc,$cc,$44,$44
|
||||
.if 0
|
||||
.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
.byte $44,$44,$44,$44,$44,$44,$44,$44
|
||||
.byte $CC,$CC,$CC,$CC,$CC,$CC,$CC,$CC
|
||||
.byte $DD,$DD,$DD,$DD,$DD,$DD,$DD,$DD
|
||||
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
|
||||
.byte $DD,$DD,$DD,$DD,$DD,$DD,$DD,$DD
|
||||
.byte $CC,$CC,$CC,$CC,$CC,$CC,$CC,$CC
|
||||
.byte $44,$44,$44,$44,$44,$44,$44,$44
|
||||
.endif
|
||||
|
||||
; This table has relatively fine color bands
|
||||
.if 0
|
||||
lores_colors_fine: ; 256
|
||||
.byte $00,$00,$00,$00,$88,$88,$88,$88
|
||||
.byte $55,$55,$55,$55,$99,$99,$99,$99
|
||||
.byte $ff,$ff,$ff,$ff,$bb,$bb,$bb,$bb
|
||||
.byte $33,$33,$33,$33,$22,$22,$22,$22
|
||||
.byte $66,$66,$66,$66,$77,$77,$77,$77
|
||||
.byte $44,$44,$44,$44,$cc,$cc,$cc,$cc
|
||||
.byte $ee,$ee,$ee,$ee,$dd,$dd,$dd,$dd
|
||||
.byte $99,$99,$99,$99,$11,$11,$11,$11
|
||||
|
||||
.byte $00,$00,$00,$00,$88,$88,$88,$88
|
||||
.byte $55,$55,$55,$55,$99,$99,$99,$99
|
||||
.byte $ff,$ff,$ff,$ff,$bb,$bb,$bb,$bb
|
||||
.byte $33,$33,$33,$33,$22,$22,$22,$22
|
||||
.byte $66,$66,$66,$66,$77,$77,$77,$77
|
||||
.byte $44,$44,$44,$44,$cc,$cc,$cc,$cc
|
||||
.byte $ee,$ee,$ee,$ee,$dd,$dd,$dd,$dd
|
||||
.byte $99,$99,$99,$99,$11,$11,$11,$11
|
||||
|
||||
.byte $00,$00,$00,$00,$88,$88,$88,$88
|
||||
.byte $55,$55,$55,$55,$99,$99,$99,$99
|
||||
.byte $ff,$ff,$ff,$ff,$bb,$bb,$bb,$bb
|
||||
.byte $33,$33,$33,$33,$22,$22,$22,$22
|
||||
.byte $66,$66,$66,$66,$77,$77,$77,$77
|
||||
.byte $44,$44,$44,$44,$cc,$cc,$cc,$cc
|
||||
.byte $ee,$ee,$ee,$ee,$dd,$dd,$dd,$dd
|
||||
.byte $99,$99,$99,$99,$11,$11,$11,$11
|
||||
|
||||
.byte $00,$00,$00,$00,$88,$88,$88,$88
|
||||
.byte $55,$55,$55,$55,$99,$99,$99,$99
|
||||
.byte $ff,$ff,$ff,$ff,$bb,$bb,$bb,$bb
|
||||
.byte $33,$33,$33,$33,$22,$22,$22,$22
|
||||
.byte $66,$66,$66,$66,$77,$77,$77,$77
|
||||
.byte $44,$44,$44,$44,$cc,$cc,$cc,$cc
|
||||
.byte $ee,$ee,$ee,$ee,$dd,$dd,$dd,$dd
|
||||
.byte $99,$99,$99,$99,$11,$11,$11,$11
|
||||
.else
|
||||
; This table has relatively wide color bands
|
||||
lores_colors_wide: ; 256
|
||||
.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
.byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
.byte $88,$88,$88,$88,$88,$88,$88,$88
|
||||
.byte $88,$88,$88,$88,$88,$88,$88,$88
|
||||
.byte $55,$55,$55,$55,$55,$55,$55,$55
|
||||
.byte $55,$55,$55,$55,$55,$55,$55,$55
|
||||
.byte $22,$22,$22,$22,$22,$22,$22,$22
|
||||
.byte $22,$22,$22,$22,$22,$22,$22,$22
|
||||
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
|
||||
.byte $ff,$ff,$ff,$ff,$ff,$ff,$ff,$ff
|
||||
.byte $bb,$bb,$bb,$bb,$bb,$bb,$bb,$bb
|
||||
.byte $bb,$bb,$bb,$bb,$bb,$bb,$bb,$bb
|
||||
.byte $33,$33,$33,$33,$33,$33,$33,$33
|
||||
.byte $33,$33,$33,$33,$33,$33,$33,$33
|
||||
.byte $22,$22,$22,$22,$22,$22,$22,$22
|
||||
.byte $22,$22,$22,$22,$22,$22,$22,$22
|
||||
.byte $66,$66,$66,$66,$66,$66,$66,$66
|
||||
.byte $66,$66,$66,$66,$66,$66,$66,$66
|
||||
.byte $77,$77,$77,$77,$77,$77,$77,$77
|
||||
.byte $77,$77,$77,$77,$77,$77,$77,$77
|
||||
.byte $44,$44,$44,$44,$44,$44,$44,$44
|
||||
.byte $44,$44,$44,$44,$44,$44,$44,$44
|
||||
.byte $cc,$cc,$cc,$cc,$cc,$cc,$cc,$cc
|
||||
.byte $cc,$cc,$cc,$cc,$cc,$cc,$cc,$cc
|
||||
.byte $ee,$ee,$ee,$ee,$ee,$ee,$ee,$ee
|
||||
.byte $ee,$ee,$ee,$ee,$ee,$ee,$ee,$ee
|
||||
.byte $dd,$dd,$dd,$dd,$dd,$dd,$dd,$dd
|
||||
.byte $dd,$dd,$dd,$dd,$dd,$dd,$dd,$dd
|
||||
.byte $99,$99,$99,$99,$99,$99,$99,$99
|
||||
.byte $99,$99,$99,$99,$99,$99,$99,$99
|
||||
.byte $11,$11,$11,$11,$11,$11,$11,$11
|
||||
.byte $11,$11,$11,$11,$11,$11,$11,$11
|
||||
.endif
|
||||
|
||||
Table1 = $5000
|
||||
Table2 = $5000+64
|
||||
|
||||
remap_table:
|
||||
.byte $00,$40,$80,$00,$C0
|
||||
|
||||
mask_src_table:
|
||||
.byte $60-8,$64-8,$68-8,$6C-8,$70-8,$74-8,$78-8,$7C-8
|
||||
.byte $7C-8,$78-8,$74-8,$70-8,$6C-8,$68-8,$64-8,$60-8
|
||||
|
||||
.include "wait_keypress.s"
|
||||
.include "irq_wait.s"
|
||||
|
||||
mask1_data:
|
||||
.incbin "graphics/tree01.gr.zx02"
|
||||
mask2_data:
|
||||
.incbin "graphics/tree03.gr.zx02"
|
||||
mask3_data:
|
||||
.incbin "graphics/tree05.gr.zx02"
|
||||
mask4_data:
|
||||
.incbin "graphics/tree07.gr.zx02"
|
||||
mask5_data:
|
||||
.incbin "graphics/tree09.gr.zx02"
|
||||
mask6_data:
|
||||
.incbin "graphics/tree11.gr.zx02"
|
||||
mask7_data:
|
||||
.incbin "graphics/tree13.gr.zx02"
|
||||
mask8_data:
|
||||
.incbin "graphics/tree15.gr.zx02"
|
||||
|
|
@ -0,0 +1,282 @@
|
|||
;==================
|
||||
;==================
|
||||
; Zero Page Usage
|
||||
;==================
|
||||
;==================
|
||||
|
||||
; ZX0 decompression addresses
|
||||
|
||||
ZX0_src = $00
|
||||
ZX0_dst = $02
|
||||
offset = $04
|
||||
bitr = $06
|
||||
pntr = $07
|
||||
WHICH_LOAD = $09
|
||||
CURRENT_DISK = $0A
|
||||
|
||||
; Zero page monitor routines addresses
|
||||
; We don't use the monitor but we use some of these anyway
|
||||
|
||||
WNDLFT = $20
|
||||
WNDWDTH = $21
|
||||
WNDTOP = $22
|
||||
WNDBTM = $23
|
||||
CH = $24
|
||||
CV = $25
|
||||
GBASL = $26
|
||||
GBASH = $27
|
||||
BASL = $28
|
||||
BASH = $29
|
||||
H2 = $2C
|
||||
V2 = $2D
|
||||
MASK = $2E
|
||||
COLOR = $30
|
||||
;INVFLG = $32
|
||||
|
||||
;==========================
|
||||
; $60-$6F unused currently
|
||||
;==========================
|
||||
|
||||
|
||||
;==========================
|
||||
; $70-$7F for PT3 Player
|
||||
;==========================
|
||||
|
||||
AY_REGISTERS = $70
|
||||
A_FINE_TONE = $70
|
||||
A_COARSE_TONE = $71
|
||||
B_FINE_TONE = $72
|
||||
B_COARSE_TONE = $73
|
||||
C_FINE_TONE = $74
|
||||
C_COARSE_TONE = $75
|
||||
NOISE = $76
|
||||
ENABLE = $77
|
||||
PT3_MIXER_VAL = $77
|
||||
A_VOLUME = $78
|
||||
B_VOLUME = $79
|
||||
C_VOLUME = $7A
|
||||
ENVELOPE_FINE = $7B
|
||||
ENVELOPE_COARSE = $7C
|
||||
ENVELOPE_SHAPE = $7D
|
||||
PATTERN_L = $7E
|
||||
PATTERN_H = $7F
|
||||
|
||||
;============================
|
||||
; $80-$8D rest of pt3_player
|
||||
;============================
|
||||
|
||||
PT3_TEMP = $80
|
||||
ORNAMENT_L = $81
|
||||
ORNAMENT_H = $82
|
||||
SAMPLE_L = $83
|
||||
SAMPLE_H = $84
|
||||
LOOP = $85
|
||||
MB_VALUE = $86
|
||||
MB_ADDR_L = $87
|
||||
MB_ADDR_H = $88
|
||||
DONE_PLAYING = $89
|
||||
DONE_SONG = $8A
|
||||
APPLEII_MODEL = $8B
|
||||
SOUND_STATUS = $8C
|
||||
SOUND_DISABLED = $80
|
||||
SOUND_IN_LC = $01 ; $01 sound effects in language card
|
||||
SOUND_MOCKINGBOARD = $02 ; mockingboard detected
|
||||
|
||||
;=============================
|
||||
; not sure why these are here
|
||||
;=============================
|
||||
|
||||
DISP_PAGE = $8D
|
||||
DRAW_PAGE = $8E
|
||||
TOTAL_RAM = $8F
|
||||
|
||||
;=============================
|
||||
; $90-$CF currently free
|
||||
;=============================
|
||||
|
||||
;=============================
|
||||
; $D0-$D9 = hgr move
|
||||
;=============================
|
||||
HGR_X1 = $D0
|
||||
HGR_X2 = $D1
|
||||
HGR_Y1 = $D2
|
||||
HGR_Y2 = $D3
|
||||
HGR_DEST= $D4
|
||||
BOARD_COUNT = $D5
|
||||
|
||||
|
||||
WHICH_SLOT = $DA ; from boot sector
|
||||
|
||||
|
||||
;==============================================
|
||||
; $E0-$EF use for common things, don't re-use
|
||||
;==============================================
|
||||
IRQ_COUNTDOWN = $E0
|
||||
SECOND_COUNTDOWN= $E1
|
||||
COUNT = $E2
|
||||
XSAVE = $E3
|
||||
TEMPY = $E4
|
||||
XPOS = $E5 ; gr_plot
|
||||
YPOS = $E6 ; gr_plot
|
||||
COLOR_MASK = $E7 ; gr_plot
|
||||
FRAME = $E8
|
||||
FRAMEL = $E8
|
||||
FRAMEH = $E9
|
||||
BTC_L = $EA ; audio
|
||||
BTC_H = $EB ; audio
|
||||
MASKL = $EC ; gr_putsprite_mask
|
||||
MASKH = $ED
|
||||
|
||||
;==============================================
|
||||
; $F0-$FB can re-use in each file
|
||||
;==============================================
|
||||
|
||||
; tunnel
|
||||
XX = $F2
|
||||
MINUSXX = $F3
|
||||
YY = $F4
|
||||
MINUSYY = $F5
|
||||
D = $F6
|
||||
R = $F7
|
||||
CX = $F8
|
||||
CY = $F9
|
||||
RR = $FA
|
||||
|
||||
; Credits
|
||||
BACKUP_OUTL = $F2
|
||||
BACKUP_OUTH = $F3
|
||||
|
||||
; Nuts/ opener
|
||||
|
||||
SPRITE_Y = $F2
|
||||
SPRITE_X = $F3
|
||||
CURRENT_ROW = $F4
|
||||
|
||||
; PLASMACUBE
|
||||
OUT1 = $F0
|
||||
OUT1H = $F1
|
||||
OUT2 = $F2
|
||||
OUT2H = $F3
|
||||
COMPT1 = $F4
|
||||
COMPT2 = $F5
|
||||
PARAM1 = $F6
|
||||
PARAM2 = $F7
|
||||
PARAM3 = $F8
|
||||
PARAM4 = $F9
|
||||
GRLINE = $FA
|
||||
GRLINEH = $FB
|
||||
|
||||
; PLASMA
|
||||
|
||||
; CUBE
|
||||
SAVEX = $F3
|
||||
SAVEY = $F4
|
||||
SUM = $F5
|
||||
|
||||
; CIRCLES/DRAW_BOXES
|
||||
COLOR2 = $F3
|
||||
X1 = $F4
|
||||
X2 = $F5
|
||||
Y1 = $F6
|
||||
Y2 = $F7
|
||||
SCENE_COUNT = $F8
|
||||
LAST_TYPE = $F9
|
||||
|
||||
; lens
|
||||
LENS_X = $F0
|
||||
LENS_Y = $F1
|
||||
XADD = $F2
|
||||
YADD = $F3
|
||||
|
||||
; rotozoom
|
||||
NUM1L = $F0
|
||||
NUM1H = $F1
|
||||
NUM2L = $F2
|
||||
NUM2H = $F3
|
||||
RESULT = $F4 ; F5,F6,F7
|
||||
SCALE_I = $F8
|
||||
SCALE_F = $F9
|
||||
ANGLE = $FA
|
||||
|
||||
; credits
|
||||
SCROLL_X = $F0
|
||||
|
||||
; polar
|
||||
SCROLL_START = $F0
|
||||
YDEST = $F1
|
||||
|
||||
; sierzoom
|
||||
;XX = $F0
|
||||
XX_TH = $F1
|
||||
XX_TL = $F2
|
||||
;YY = $F3
|
||||
YY_TH = $F4
|
||||
YY_TL = $F5
|
||||
T_L = $F6
|
||||
T_H = $F7
|
||||
SAVED = $F8
|
||||
|
||||
BAR_X1 = $F0
|
||||
BAR_X2 = $F1
|
||||
|
||||
; spheres
|
||||
BASE_SPRITEL = $F0
|
||||
BASE_SPRITEH = $F1
|
||||
CURRENT_SPRITEL = $F2
|
||||
CURRENT_SPRITEH = $F3
|
||||
XMISSION_COUNT = $F4
|
||||
REF1L = $F5
|
||||
REF1H = $F6
|
||||
REF2L = $F7
|
||||
REF2H = $F8
|
||||
REFCOUNT = $F9
|
||||
|
||||
; BIOS
|
||||
STRING_COUNT = $F0
|
||||
LEAD0 = $F1
|
||||
SCROLL_OUT = $F2
|
||||
SCROLL_IN = $F3
|
||||
MEMCOUNT = $F4
|
||||
FAKE_KEY_COUNT = $F5
|
||||
|
||||
; OPENER
|
||||
TICKER = $F1
|
||||
P2_OFFSET = $F2
|
||||
|
||||
; dots
|
||||
MAX_DOTS = $F1
|
||||
Y_OFFSET = $F2
|
||||
|
||||
;==============================================
|
||||
; $FC-$FF we use for in/out pointers
|
||||
;==============================================
|
||||
|
||||
INL = $FC
|
||||
INH = $FD
|
||||
OUTL = $FE
|
||||
OUTH = $FF
|
||||
|
||||
|
||||
; read any file slot 6 version
|
||||
; based on FASTLD6 and RTS copyright (c) Peter Ferrie 2011-2013,2018
|
||||
|
||||
; modified to assembled with ca64 -- vmw
|
||||
; added code to patch it to run from current disk slot -- vmw
|
||||
|
||||
|
||||
adrlo = $26 ; constant from boot prom
|
||||
adrhi = $27 ; constant from boot prom
|
||||
tmpsec = $3c ; constant from boot prom
|
||||
reqsec = $3d ; constant from boot prom
|
||||
sizelo = $44
|
||||
sizehi = $45
|
||||
secsize = $46
|
||||
|
||||
ldsizel = $f0
|
||||
ldsizeh = $f1
|
||||
namlo = $fb
|
||||
namhi = $fc
|
||||
step = $fd ; state for stepper motor
|
||||
tmptrk = $fe ; temporary copy of current track
|
||||
phase = $ff ; current phase for /seek
|
||||
|
||||
|
|
@ -0,0 +1,159 @@
|
|||
; De-compressor for ZX02 files
|
||||
; ----------------------------
|
||||
;
|
||||
; Decompress ZX02 data (6502 optimized format), optimized for speed and size
|
||||
; 138 bytes code, 58.0 cycles/byte in test file.
|
||||
;
|
||||
; Compress with:
|
||||
; zx02 input.bin output.zx0
|
||||
;
|
||||
; (c) 2022 DMSC
|
||||
; Code under MIT license, see LICENSE file.
|
||||
|
||||
|
||||
;ZP=$80
|
||||
|
||||
;offset = ZP+0
|
||||
;ZX0_src = ZP+2
|
||||
;ZX0_dst = ZP+4
|
||||
;bitr = ZP+6
|
||||
;pntr = ZP+7
|
||||
|
||||
; Initial values for offset, source, destination and bitr
|
||||
;zx0_ini_block:
|
||||
; .byte $00, $00, <comp_data, >comp_data, <out_addr, >out_addr, $80
|
||||
|
||||
;--------------------------------------------------
|
||||
; Decompress ZX0 data (6502 optimized format)
|
||||
|
||||
zx02_full_decomp:
|
||||
; ; Get initialization block
|
||||
; ldy #7
|
||||
;
|
||||
;copy_init: lda zx0_ini_block-1, y
|
||||
; sta offset-1, y
|
||||
; dey
|
||||
; bne copy_init
|
||||
|
||||
|
||||
sta ZX0_dst+1 ; page to output to in A
|
||||
zx_src_l:
|
||||
ldy #$dd
|
||||
sty ZX0_src
|
||||
zx_src_h:
|
||||
ldy #$dd
|
||||
sty ZX0_src+1
|
||||
ldy #$80
|
||||
sty bitr
|
||||
ldy #0
|
||||
sty offset
|
||||
sty offset+1
|
||||
sty ZX0_dst ; always on even page
|
||||
|
||||
; Decode literal: Ccopy next N bytes from compressed file
|
||||
; Elias(length) byte[1] byte[2] ... byte[N]
|
||||
decode_literal:
|
||||
jsr get_elias
|
||||
|
||||
cop0: lda (ZX0_src), y
|
||||
inc ZX0_src
|
||||
bne plus1
|
||||
inc ZX0_src+1
|
||||
plus1: sta (ZX0_dst),y
|
||||
inc ZX0_dst
|
||||
bne plus2
|
||||
inc ZX0_dst+1
|
||||
plus2: dex
|
||||
bne cop0
|
||||
|
||||
asl bitr
|
||||
bcs dzx0s_new_offset
|
||||
|
||||
; Copy from last offset (repeat N bytes from last offset)
|
||||
; Elias(length)
|
||||
jsr get_elias
|
||||
dzx0s_copy:
|
||||
lda ZX0_dst
|
||||
sbc offset ; C=0 from get_elias
|
||||
sta pntr
|
||||
lda ZX0_dst+1
|
||||
sbc offset+1
|
||||
sta pntr+1
|
||||
|
||||
cop1:
|
||||
lda (pntr), y
|
||||
inc pntr
|
||||
bne plus3
|
||||
inc pntr+1
|
||||
plus3: sta (ZX0_dst),y
|
||||
inc ZX0_dst
|
||||
bne plus4
|
||||
inc ZX0_dst+1
|
||||
plus4: dex
|
||||
bne cop1
|
||||
|
||||
asl bitr
|
||||
bcc decode_literal
|
||||
|
||||
; Copy from new offset (repeat N bytes from new offset)
|
||||
; Elias(MSB(offset)) LSB(offset) Elias(length-1)
|
||||
dzx0s_new_offset:
|
||||
; Read elias code for high part of offset
|
||||
jsr get_elias
|
||||
beq exit ; Read a 0, signals the end
|
||||
; Decrease and divide by 2
|
||||
dex
|
||||
txa
|
||||
lsr ; @
|
||||
sta offset+1
|
||||
|
||||
; Get low part of offset, a literal 7 bits
|
||||
lda (ZX0_src), y
|
||||
inc ZX0_src
|
||||
bne plus5
|
||||
inc ZX0_src+1
|
||||
plus5:
|
||||
; Divide by 2
|
||||
ror ; @
|
||||
sta offset
|
||||
|
||||
; And get the copy length.
|
||||
; Start elias reading with the bit already in carry:
|
||||
ldx #1
|
||||
jsr elias_skip1
|
||||
|
||||
inx
|
||||
bcc dzx0s_copy
|
||||
|
||||
; Read an elias-gamma interlaced code.
|
||||
; ------------------------------------
|
||||
get_elias:
|
||||
; Initialize return value to #1
|
||||
ldx #1
|
||||
bne elias_start
|
||||
|
||||
elias_get: ; Read next data bit to result
|
||||
asl bitr
|
||||
rol ; @
|
||||
tax
|
||||
|
||||
elias_start:
|
||||
; Get one bit
|
||||
asl bitr
|
||||
bne elias_skip1
|
||||
|
||||
; Read new bit from stream
|
||||
lda (ZX0_src), y
|
||||
inc ZX0_src
|
||||
bne plus6
|
||||
inc ZX0_src+1
|
||||
plus6: ;sec ; not needed, C=1 guaranteed from last bit
|
||||
rol ;@
|
||||
sta bitr
|
||||
|
||||
elias_skip1:
|
||||
txa
|
||||
bcs elias_get
|
||||
; Got ending bit, stop reading
|
||||
exit:
|
||||
rts
|
||||
Loading…
Reference in New Issue