some more routines
This commit is contained in:
nino-porcino
parent
6959d906f7
commit
4dc1959c18
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@ -3,4 +3,4 @@
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*.klog
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*.vs
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*.dbg
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KickC/**.asm
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*.asm
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98
test.c
98
test.c
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@ -36,43 +36,14 @@ const byte READ_FROM_VRAM = 0b00000000;
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#define TMS_WRITE_REG(a) (*VDP_REG=(byte)(a));
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#define TMS_WRITE_DATA(a) (*VDP_DATA=(byte)(a));
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#define TMS_READ_REG (*VDP_REG);
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#define TMS_READ_DATA (*VDP_DATA);
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// puts a character on the apple1 screen using the WOZMON routine
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void woz_putc(byte c) {
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asm {
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lda c
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jsr ECHO
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}
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}
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// returns to WOZMON prompt
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void woz_mon() {
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#ifdef APPLE1
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asm {
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jmp WOZMON
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}
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#endif
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}
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// reads a key from the apple-1 keyboard
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byte woz_getkey() {
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#ifdef APPLE1
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while((unsigned byte)PEEK(KEY_CTRL)>0);
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return PEEK(KEY_DATA) & 0x7f;
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#else
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byte key;
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byte const *keyptr = &key;
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kickasm(uses keyptr, uses GETIN) {{
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__wait:
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jsr GETIN
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cmp #0
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beq __wait
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sta keyptr
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}}
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return key;
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#endif
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}
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// status register
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#define FRAME_BIT(a) ((a) & 0b10000000)
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#define FIVESPR_BIT(a) ((a) & 0b01000000)
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#define COLLISION_BIT(a) ((a) & 0b00100000)
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#define SPRITE_NUM(a) ((a) & 0b00011111)
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// sets the VRAM write address on the TMS9918
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void set_vram_write_addr(word addr) {
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@ -93,6 +64,18 @@ void write_reg(byte regnum, byte val) {
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TMS_WRITE_REG((regnum & 0b00001111)|WRITE_TO_REG);
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}
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inline void set_color(byte col) {
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write_reg(7, col);
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}
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byte SCREEN1_TABLE[8] = {
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0x00, 0xc0, 0x05, 0x80, 0x01, 0x20, 0x00, 0x25
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};
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byte SCREEN2_TABLE[8] = {
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0x02, 0xc0, 0x0e, 0xff, 0x03, 0x76, 0x03, 0x25
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};
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word screen1_cursor;
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#include "laser500_font.ascii.c"
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@ -115,10 +98,6 @@ const word SCREEN1_SPRITE_PATTERNS = 0x0000;
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const word SCREEN1_SPRITE_ATTRS = 0x1000;
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const word SCREEN1_SIZE = (32*24);
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byte SCREEN1_TABLE[8] = {
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0x00, 0xc0, 0x05, 0x80, 0x01, 0x20, 0x00, 0x25
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};
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// loads the Laser 500 font on the pattern table
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void SCREEN1_LOAD_FONT() {
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@ -198,9 +177,6 @@ const word SCREEN2_SPRITE_PATTERNS = 0x1800;
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const word SCREEN2_SPRITE_ATTRS = 0x3b00;
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const word SCREEN2_SIZE = (32*24);
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byte SCREEN2_TABLE[8] = {
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0x02, 0xc0, 0x0e, 0xff, 0x03, 0x76, 0x03, 0x25
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};
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void SCREEN_INIT(byte *table) {
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for(byte i=0;i<8;i++) {
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@ -322,12 +298,48 @@ void prova_screen2() {
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}
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}
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// puts a character on the apple1 screen using the WOZMON routine
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void woz_putc(byte c) {
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asm {
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lda c
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jsr ECHO
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}
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}
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// returns to WOZMON prompt
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void woz_mon() {
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#ifdef APPLE1
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asm {
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jmp WOZMON
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}
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#endif
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}
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// reads a key from the apple-1 keyboard
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byte woz_getkey() {
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#ifdef APPLE1
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while((unsigned byte)PEEK(KEY_CTRL)>0);
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return PEEK(KEY_DATA) & 0x7f;
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#else
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byte key;
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byte const *keyptr = &key;
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kickasm(uses keyptr, uses GETIN) {{
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__wait:
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jsr GETIN
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cmp #0
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beq __wait
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sta keyptr
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}}
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return key;
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#endif
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}
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void main() {
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byte key = '1';
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for(;;) {
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if(key == '1') prova_screen1();
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else if(key == '2') prova_screen2();
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else if(key == 0x0d) break;
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else if(key == '0') break;
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else woz_putc(key);
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key = woz_getkey();
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854
test_apple1.asm
854
test_apple1.asm
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@ -1,854 +0,0 @@
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// TODO verificare NOPs
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// Generic ASM 6502
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.file [name="test.prg", type="prg", segments="Program"]
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.segmentdef Program [segments="Code, Data"]
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.segmentdef Code [start=$4000]
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.segmentdef Data [startAfter="Code"]
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.const WOZMON = $ff1f
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// enters monitor
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.const ECHO = $ffef
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// print hex byte in A (A destroyed)
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.const KEY_DATA = $d010
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// read key
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.const KEY_CTRL = $d011
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// TMS9918 interface flags
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.const WRITE_TO_REG = $80
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.const WRITE_TO_VRAM = $40
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// sprite patterns: $0000
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// pattern table: $0800 (256*8)
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// sprite attributes: $1000
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// unused: $1080
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// name table: $1400 (32*24)
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// unused: $1800
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// color table: $2000 (32)
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// unused $2020-$3FFF
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.const SCREEN1_PATTERN_TABLE = $800
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.const SCREEN1_NAME_TABLE = $1400
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.const SCREEN1_COLOR_TABLE = $2000
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.const SCREEN1_SPRITE_PATTERNS = 0
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.const SCREEN1_SPRITE_ATTRS = $1000
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.const SCREEN1_SIZE = $20*$18
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// pattern table: $0000-$17FF (256*8*3)
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// sprite patterns: $1800-$19FF
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// color table: $2000-$27FF (256*8*3)
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// name table: $3800-$3AFF (32*24 = 256*3 = 768)
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// sprite attributes: $3B00-$3BFF
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// unused $3C00-$3FFF
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//
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.const SCREEN2_PATTERN_TABLE = 0
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.const SCREEN2_NAME_TABLE = $3800
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.const SCREEN2_COLOR_TABLE = $2000
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.const SCREEN2_SPRITE_PATTERNS = $1800
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.const SCREEN2_SPRITE_ATTRS = $3b00
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.const SCREEN2_SIZE = $20*$18
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// control port
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.label VDP_DATA = $c000
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// TMS9918 data port (VRAM)
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.label VDP_REG = $c001
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.label screen1_cursor = $d
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.segment Code
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main: {
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lda #<0
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sta.z screen1_cursor
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sta.z screen1_cursor+1
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ldx #'1'
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__b1:
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cpx #'1'
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beq __b2
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cpx #'2'
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beq __b3
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cpx #$d
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beq __b4
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stx.z woz_putc.c
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jsr woz_putc
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__b5:
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jsr woz_getkey
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tax
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jmp __b1
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__b4:
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lda #$2a
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sta.z woz_putc.c
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jsr woz_putc
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jsr woz_mon
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rts
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__b3:
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jsr prova_screen2
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jmp __b5
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__b2:
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jsr prova_screen1
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jmp __b5
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}
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// puts a character on the apple1 screen using the WOZMON routine
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// woz_putc(byte zp($11) c)
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woz_putc: {
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.label c = $11
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lda c
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jsr ECHO
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rts
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}
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// reads a key from the apple-1 keyboard
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woz_getkey: {
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__b1:
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lda KEY_CTRL
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cmp #0
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bne __b1
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lda #$7f
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and KEY_DATA
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rts
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}
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// returns to WOZMON prompt
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woz_mon: {
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jmp WOZMON
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}
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prova_screen2: {
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.label i = 2
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.label i1 = 3
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lda #<SCREEN2_TABLE
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sta.z SCREEN_INIT.table
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lda #>SCREEN2_TABLE
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sta.z SCREEN_INIT.table+1
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jsr SCREEN_INIT
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jsr SCREEN2_FILL
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jsr screen2_square_sprites
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lda #$1f
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sta.z SCREEN2_PUTS.col
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lda #0
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sta.z SCREEN2_PUTS.y
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sta.z SCREEN2_PUTS.x
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lda #<s
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sta.z SCREEN2_PUTS.s
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lda #>s
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sta.z SCREEN2_PUTS.s+1
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jsr SCREEN2_PUTS
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lda #$1f
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sta.z SCREEN2_PUTS.col
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lda #2
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sta.z SCREEN2_PUTS.y
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lda #0
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sta.z SCREEN2_PUTS.x
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lda #<s1
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sta.z SCREEN2_PUTS.s
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lda #>s1
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sta.z SCREEN2_PUTS.s+1
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jsr SCREEN2_PUTS
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lda #$1f
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sta.z SCREEN2_PUTS.col
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lda #4
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sta.z SCREEN2_PUTS.y
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lda #0
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sta.z SCREEN2_PUTS.x
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lda #<s2
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sta.z SCREEN2_PUTS.s
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lda #>s2
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sta.z SCREEN2_PUTS.s+1
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jsr SCREEN2_PUTS
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lda #0
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sta.z i
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__b1:
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lda.z i
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cmp #$10
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bcc __b2
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lda #0
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sta.z i1
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__b3:
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lda.z i1
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cmp #$c0
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bcc __b4
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rts
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__b4:
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lda.z i1
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lsr
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tax
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lda.z i1
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sta.z SCREEN2_PSET.x
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jsr SCREEN2_PSET
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lda.z i1
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sta.z SCREEN2_PSET.x
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ldx.z i1
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jsr SCREEN2_PSET
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lda.z i1
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lsr
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sta.z SCREEN2_PSET.x
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ldx.z i1
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jsr SCREEN2_PSET
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inc.z i1
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jmp __b3
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__b2:
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lax.z i
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axs #-[6]
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stx.z SCREEN2_PUTS.y
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lda #$f
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sec
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sbc.z i
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asl
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asl
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asl
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asl
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clc
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adc.z i
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sta.z SCREEN2_PUTS.col
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lda #5
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sta.z SCREEN2_PUTS.x
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lda #<s3
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sta.z SCREEN2_PUTS.s
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lda #>s3
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sta.z SCREEN2_PUTS.s+1
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jsr SCREEN2_PUTS
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inc.z i
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jmp __b1
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.segment Data
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s3: .text " SCREEN 2 "
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.byte 0
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}
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.segment Code
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prova_screen1: {
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.label i = 4
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lda #<SCREEN1_TABLE
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sta.z SCREEN_INIT.table
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lda #>SCREEN1_TABLE
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sta.z SCREEN_INIT.table+1
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jsr SCREEN_INIT
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jsr SCREEN1_FILL
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jsr SCREEN1_LOAD_FONT
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lda #<SCREEN1_NAME_TABLE
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sta.z screen1_cursor
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lda #>SCREEN1_NAME_TABLE
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sta.z screen1_cursor+1
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lda #<s
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sta.z SCREEN1_PUTS.s
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lda #>s
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sta.z SCREEN1_PUTS.s+1
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jsr SCREEN1_PUTS
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lda #2
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jsr SCREEN1_LOCATEXY
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lda #<s1
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sta.z SCREEN1_PUTS.s
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lda #>s1
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sta.z SCREEN1_PUTS.s+1
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jsr SCREEN1_PUTS
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lda #4
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jsr SCREEN1_LOCATEXY
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lda #<s2
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sta.z SCREEN1_PUTS.s
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lda #>s2
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sta.z SCREEN1_PUTS.s+1
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jsr SCREEN1_PUTS
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lda #$a
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jsr SCREEN1_LOCATEXY
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lda #<0
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sta.z i
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sta.z i+1
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__b1:
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lda.z i+1
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cmp #>$100
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bcc __b2
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bne !+
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lda.z i
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cmp #<$100
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bcc __b2
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!:
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jsr screen1_square_sprites
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rts
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__b2:
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lda.z i
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tay
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jsr SCREEN1_PUTCHAR
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inc.z i
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bne !+
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inc.z i+1
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!:
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jmp __b1
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}
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// SCREEN_INIT(byte* zp($14) table)
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SCREEN_INIT: {
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.label table = $14
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ldy #0
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__b1:
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cpy #8
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bcc __b2
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rts
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__b2:
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tya
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tax
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lda (table),y
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jsr write_reg
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iny
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jmp __b1
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}
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SCREEN2_FILL: {
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.label i = 4
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.label i1 = $14
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.label i2 = 9
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// fills name table x3 with increasing numbers
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lda #<SCREEN2_NAME_TABLE
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sta.z set_vram_write_addr.addr
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lda #>SCREEN2_NAME_TABLE
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sta.z set_vram_write_addr.addr+1
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jsr set_vram_write_addr
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lda #<0
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sta.z i
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sta.z i+1
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__b1:
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lda.z i+1
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cmp #>SCREEN2_SIZE
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bcc __b2
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bne !+
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lda.z i
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cmp #<SCREEN2_SIZE
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bcc __b2
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!:
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// fill pattern table with 0 (clear screen)
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lda #<SCREEN2_PATTERN_TABLE
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sta.z set_vram_write_addr.addr
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lda #>SCREEN2_PATTERN_TABLE
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sta.z set_vram_write_addr.addr+1
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jsr set_vram_write_addr
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lda #<$300*8
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sta.z i1
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lda #>$300*8
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sta.z i1+1
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__b4:
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lda.z i1
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ora.z i1+1
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bne __b5
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// fill color table with $1F
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lda #<SCREEN2_COLOR_TABLE
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sta.z set_vram_write_addr.addr
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lda #>SCREEN2_COLOR_TABLE
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sta.z set_vram_write_addr.addr+1
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jsr set_vram_write_addr
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lda #<$300*8
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sta.z i2
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lda #>$300*8
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sta.z i2+1
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__b7:
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lda.z i2
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ora.z i2+1
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bne __b8
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rts
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__b8:
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lda #$1f
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sta VDP_DATA
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lda.z i2
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bne !+
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dec.z i2+1
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!:
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dec.z i2
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jmp __b7
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__b5:
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lda #0
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sta VDP_DATA
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lda.z i1
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bne !+
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dec.z i1+1
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!:
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dec.z i1
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jmp __b4
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__b2:
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lda #$ff
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and.z i
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sta VDP_DATA
|
||||
inc.z i
|
||||
bne !+
|
||||
inc.z i+1
|
||||
!:
|
||||
jmp __b1
|
||||
}
|
||||
screen2_square_sprites: {
|
||||
// fills first sprite pattern with 255
|
||||
lda #<SCREEN2_SPRITE_PATTERNS
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN2_SPRITE_PATTERNS
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldx #0
|
||||
// start writing in the sprite patterns
|
||||
__b1:
|
||||
cpx #8
|
||||
bcc __b2
|
||||
// set sprite coordinates
|
||||
lda #<SCREEN2_SPRITE_ATTRS
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN2_SPRITE_ATTRS
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldx #0
|
||||
// start writing in the sprite attribute
|
||||
__b4:
|
||||
cpx #$20
|
||||
bcc __b5
|
||||
rts
|
||||
__b5:
|
||||
lda #0
|
||||
sta VDP_DATA
|
||||
sta VDP_DATA
|
||||
sta VDP_DATA
|
||||
stx VDP_DATA
|
||||
inx
|
||||
jmp __b4
|
||||
__b2:
|
||||
lda #0
|
||||
sta VDP_DATA
|
||||
inx
|
||||
jmp __b1
|
||||
}
|
||||
// SCREEN2_PUTS(byte zp(8) x, byte zp(6) y, byte zp(7) col, byte* zp(9) s)
|
||||
SCREEN2_PUTS: {
|
||||
.label s = 9
|
||||
.label x = 8
|
||||
.label y = 6
|
||||
.label col = 7
|
||||
__b1:
|
||||
ldy #0
|
||||
lda (s),y
|
||||
inc.z s
|
||||
bne !+
|
||||
inc.z s+1
|
||||
!:
|
||||
cmp #0
|
||||
bne __b2
|
||||
rts
|
||||
__b2:
|
||||
tay
|
||||
lda.z x
|
||||
sta.z SCREEN2_PUTC.x
|
||||
lda.z y
|
||||
sta.z SCREEN2_PUTC.y
|
||||
ldx.z col
|
||||
jsr SCREEN2_PUTC
|
||||
inc.z x
|
||||
jmp __b1
|
||||
}
|
||||
// SCREEN2_PSET(byte zp($12) x, byte register(X) y)
|
||||
SCREEN2_PSET: {
|
||||
.label __1 = $f
|
||||
.label __3 = $14
|
||||
.label __4 = $f
|
||||
.label __12 = $14
|
||||
.label paddr = $f
|
||||
.label data = $13
|
||||
.label x = $12
|
||||
lda #$f8
|
||||
and.z x
|
||||
sta.z __1
|
||||
lda #0
|
||||
sta.z __1+1
|
||||
txa
|
||||
and #$f8
|
||||
sta.z __12
|
||||
lda #0
|
||||
sta.z __12+1
|
||||
asl.z __3
|
||||
rol.z __3+1
|
||||
asl.z __3
|
||||
rol.z __3+1
|
||||
asl.z __3
|
||||
rol.z __3+1
|
||||
asl.z __3
|
||||
rol.z __3+1
|
||||
asl.z __3
|
||||
rol.z __3+1
|
||||
lda.z __4
|
||||
clc
|
||||
adc.z __3
|
||||
sta.z __4
|
||||
lda.z __4+1
|
||||
adc.z __3+1
|
||||
sta.z __4+1
|
||||
txa
|
||||
and #8-1
|
||||
clc
|
||||
adc.z paddr
|
||||
sta.z paddr
|
||||
bcc !+
|
||||
inc.z paddr+1
|
||||
!:
|
||||
lda.z paddr
|
||||
sta.z set_vram_read_addr.addr
|
||||
lda.z paddr+1
|
||||
sta.z set_vram_read_addr.addr+1
|
||||
jsr set_vram_read_addr
|
||||
lda VDP_DATA
|
||||
sta.z data
|
||||
jsr set_vram_write_addr
|
||||
lda #8-1
|
||||
and.z x
|
||||
tay
|
||||
lda pow2_table,y
|
||||
ora.z data
|
||||
sta VDP_DATA
|
||||
rts
|
||||
.segment Data
|
||||
pow2_table: .byte $80, $40, $20, $10, 8, 4, 2, 1
|
||||
}
|
||||
.segment Code
|
||||
SCREEN1_FILL: {
|
||||
.label i = $14
|
||||
.label i1 = 9
|
||||
// fills name table with spaces (32)
|
||||
lda #<SCREEN1_NAME_TABLE
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_NAME_TABLE
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
lda #<SCREEN1_SIZE
|
||||
sta.z i
|
||||
lda #>SCREEN1_SIZE
|
||||
sta.z i+1
|
||||
__b1:
|
||||
lda.z i
|
||||
ora.z i+1
|
||||
bne __b2
|
||||
// fill pattern table with 0
|
||||
lda #<SCREEN1_PATTERN_TABLE
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_PATTERN_TABLE
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
lda #<$100*8
|
||||
sta.z i1
|
||||
lda #>$100*8
|
||||
sta.z i1+1
|
||||
__b4:
|
||||
lda.z i1
|
||||
ora.z i1+1
|
||||
bne __b5
|
||||
// fill color table with $1F
|
||||
lda #<SCREEN1_COLOR_TABLE
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_COLOR_TABLE
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldx #$20
|
||||
__b7:
|
||||
cpx #0
|
||||
bne __b8
|
||||
rts
|
||||
__b8:
|
||||
lda #$1f
|
||||
sta VDP_DATA
|
||||
dex
|
||||
jmp __b7
|
||||
__b5:
|
||||
lda #0
|
||||
sta VDP_DATA
|
||||
lda.z i1
|
||||
bne !+
|
||||
dec.z i1+1
|
||||
!:
|
||||
dec.z i1
|
||||
jmp __b4
|
||||
__b2:
|
||||
lda #$20
|
||||
sta VDP_DATA
|
||||
lda.z i
|
||||
bne !+
|
||||
dec.z i+1
|
||||
!:
|
||||
dec.z i
|
||||
jmp __b1
|
||||
}
|
||||
// loads the Laser 500 font on the pattern table
|
||||
SCREEN1_LOAD_FONT: {
|
||||
// reverse font (32..127)
|
||||
.label source = 9
|
||||
.label i = $14
|
||||
// reverse font (32..127)
|
||||
.label source_1 = $d
|
||||
.label i_1 = $b
|
||||
// start writing into VRAM from space character (32..127)
|
||||
lda #<SCREEN1_PATTERN_TABLE+$20*8
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_PATTERN_TABLE+$20*8
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
lda #<FONT
|
||||
sta.z source
|
||||
lda #>FONT
|
||||
sta.z source+1
|
||||
lda #<$300
|
||||
sta.z i
|
||||
lda #>$300
|
||||
sta.z i+1
|
||||
__b1:
|
||||
lda.z i
|
||||
ora.z i+1
|
||||
bne __b2
|
||||
lda #<SCREEN1_PATTERN_TABLE+($80+$20)*8
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_PATTERN_TABLE+($80+$20)*8
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
lda #<FONT
|
||||
sta.z source_1
|
||||
lda #>FONT
|
||||
sta.z source_1+1
|
||||
lda #<$300
|
||||
sta.z i_1
|
||||
lda #>$300
|
||||
sta.z i_1+1
|
||||
__b4:
|
||||
lda.z i_1
|
||||
ora.z i_1+1
|
||||
bne __b5
|
||||
rts
|
||||
__b5:
|
||||
ldy #0
|
||||
lda (source_1),y
|
||||
eor #$ff
|
||||
sta VDP_DATA
|
||||
inc.z source_1
|
||||
bne !+
|
||||
inc.z source_1+1
|
||||
!:
|
||||
lda.z i_1
|
||||
bne !+
|
||||
dec.z i_1+1
|
||||
!:
|
||||
dec.z i_1
|
||||
jmp __b4
|
||||
__b2:
|
||||
ldy #0
|
||||
lda (source),y
|
||||
sta VDP_DATA
|
||||
inc.z source
|
||||
bne !+
|
||||
inc.z source+1
|
||||
!:
|
||||
lda.z i
|
||||
bne !+
|
||||
dec.z i+1
|
||||
!:
|
||||
dec.z i
|
||||
jmp __b1
|
||||
}
|
||||
// prints 0 terminated string pointed by YA
|
||||
// SCREEN1_PUTS(byte* zp($b) s)
|
||||
SCREEN1_PUTS: {
|
||||
.label s = $b
|
||||
__b1:
|
||||
ldy #0
|
||||
lda (s),y
|
||||
inc.z s
|
||||
bne !+
|
||||
inc.z s+1
|
||||
!:
|
||||
cmp #0
|
||||
bne __b2
|
||||
rts
|
||||
__b2:
|
||||
tay
|
||||
jsr SCREEN1_PUTCHAR
|
||||
jmp __b1
|
||||
}
|
||||
// SCREEN1_LOCATEXY(byte register(A) y)
|
||||
SCREEN1_LOCATEXY: {
|
||||
.label __0 = $d
|
||||
.label __3 = $d
|
||||
sta.z __3
|
||||
lda #0
|
||||
sta.z __3+1
|
||||
asl.z __0
|
||||
rol.z __0+1
|
||||
asl.z __0
|
||||
rol.z __0+1
|
||||
asl.z __0
|
||||
rol.z __0+1
|
||||
asl.z __0
|
||||
rol.z __0+1
|
||||
asl.z __0
|
||||
rol.z __0+1
|
||||
clc
|
||||
lda.z screen1_cursor
|
||||
adc #<SCREEN1_NAME_TABLE
|
||||
sta.z screen1_cursor
|
||||
lda.z screen1_cursor+1
|
||||
adc #>SCREEN1_NAME_TABLE
|
||||
sta.z screen1_cursor+1
|
||||
rts
|
||||
}
|
||||
screen1_square_sprites: {
|
||||
// fills first sprite pattern with 255
|
||||
lda #<SCREEN1_SPRITE_PATTERNS
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_SPRITE_PATTERNS
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldx #0
|
||||
// start writing in the sprite patterns
|
||||
__b1:
|
||||
cpx #8
|
||||
bcc __b2
|
||||
// set sprite coordinates
|
||||
lda #<SCREEN1_SPRITE_ATTRS
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_SPRITE_ATTRS
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldy #0
|
||||
// start writing in the sprite attribute
|
||||
__b4:
|
||||
cpy #$20
|
||||
bcc __b5
|
||||
rts
|
||||
__b5:
|
||||
tya
|
||||
clc
|
||||
adc #6
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
sta VDP_DATA
|
||||
tya
|
||||
clc
|
||||
adc #6
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
sta VDP_DATA
|
||||
lda #0
|
||||
sta VDP_DATA
|
||||
sty VDP_DATA
|
||||
iny
|
||||
jmp __b4
|
||||
__b2:
|
||||
lda #$ff
|
||||
sta VDP_DATA
|
||||
inx
|
||||
jmp __b1
|
||||
}
|
||||
// prints character to TMS (SCREEN 1 MODE)
|
||||
// SCREEN1_PUTCHAR(byte register(Y) c)
|
||||
SCREEN1_PUTCHAR: {
|
||||
lda.z screen1_cursor
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda.z screen1_cursor+1
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
inc.z screen1_cursor
|
||||
bne !+
|
||||
inc.z screen1_cursor+1
|
||||
!:
|
||||
sty VDP_DATA
|
||||
rts
|
||||
}
|
||||
// writes a value to a TMS9918 register (0-7)
|
||||
// write_reg(byte register(X) regnum, byte register(A) val)
|
||||
write_reg: {
|
||||
sta VDP_REG
|
||||
txa
|
||||
and #$f
|
||||
ora #WRITE_TO_REG
|
||||
sta VDP_REG
|
||||
rts
|
||||
}
|
||||
// sets the VRAM write address on the TMS9918
|
||||
// set_vram_write_addr(word zp($f) addr)
|
||||
set_vram_write_addr: {
|
||||
.label addr = $f
|
||||
lda.z addr
|
||||
sta VDP_REG
|
||||
lda.z addr+1
|
||||
and #$3f
|
||||
ora #WRITE_TO_VRAM
|
||||
sta VDP_REG
|
||||
rts
|
||||
}
|
||||
// SCREEN2_PUTC(byte register(Y) ch, byte zp($12) x, byte zp($13) y, byte register(X) col)
|
||||
SCREEN2_PUTC: {
|
||||
.label __1 = $14
|
||||
.label __4 = $16
|
||||
.label __12 = $14
|
||||
.label source = $14
|
||||
.label addr = $16
|
||||
.label x = $12
|
||||
.label y = $13
|
||||
tya
|
||||
sec
|
||||
sbc #$20
|
||||
sta.z __12
|
||||
lda #0
|
||||
sta.z __12+1
|
||||
asl.z __1
|
||||
rol.z __1+1
|
||||
asl.z __1
|
||||
rol.z __1+1
|
||||
asl.z __1
|
||||
rol.z __1+1
|
||||
clc
|
||||
lda.z source
|
||||
adc #<FONT
|
||||
sta.z source
|
||||
lda.z source+1
|
||||
adc #>FONT
|
||||
sta.z source+1
|
||||
lda.z x
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
tay
|
||||
lda.z y
|
||||
sta.z __4+1
|
||||
lda #0
|
||||
sta.z __4
|
||||
tya
|
||||
clc
|
||||
adc.z addr
|
||||
sta.z addr
|
||||
bcc !+
|
||||
inc.z addr+1
|
||||
!:
|
||||
lda.z addr
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda.z addr+1
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldy #0
|
||||
__b1:
|
||||
cpy #8
|
||||
bcc __b2
|
||||
clc
|
||||
lda.z addr
|
||||
adc #<SCREEN2_COLOR_TABLE
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda.z addr+1
|
||||
adc #>SCREEN2_COLOR_TABLE
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldy #0
|
||||
__b4:
|
||||
cpy #8
|
||||
bcc __b5
|
||||
rts
|
||||
__b5:
|
||||
stx VDP_DATA
|
||||
iny
|
||||
jmp __b4
|
||||
__b2:
|
||||
lda (source),y
|
||||
sta VDP_DATA
|
||||
iny
|
||||
jmp __b1
|
||||
}
|
||||
// sets the VRAM read address on the TMS9918
|
||||
// set_vram_read_addr(word zp($16) addr)
|
||||
set_vram_read_addr: {
|
||||
.label addr = $16
|
||||
lda.z addr
|
||||
sta VDP_REG
|
||||
lda.z addr+1
|
||||
and #$3f
|
||||
sta VDP_REG
|
||||
rts
|
||||
}
|
||||
.segment Data
|
||||
FONT: .byte 0, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 0, 8, 0, $14, $14, $14, 0, 0, 0, 0, 0, $14, $14, $3e, $14, $3e, $14, $14, 0, 8, $1e, $28, $1c, $a, $3c, 8, 0, $30, $32, 4, 8, $10, $26, 6, 0, $10, $28, $28, $10, $2a, $24, $1a, 0, 8, 8, 8, 0, 0, 0, 0, 0, 8, $10, $20, $20, $20, $10, 8, 0, 8, 4, 2, 2, 2, 4, 8, 0, 8, $2a, $1c, 8, $1c, $2a, 8, 0, 0, 8, 8, $3e, 8, 8, 0, 0, 0, 0, 0, 0, 8, 8, $10, 0, 0, 0, 0, $3e, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 2, 4, 8, $10, $20, 0, 0, $1c, $22, $26, $2a, $32, $22, $1c, 0, 8, $18, 8, 8, 8, 8, $1c, 0, $1c, $22, 2, $c, $10, $20, $3e, 0, $3e, 2, 4, $c, 2, $22, $1c, 0, 4, $c, $14, $24, $3e, 4, 4, 0, $3e, $20, $3c, 2, 2, $22, $1c, 0, $e, $10, $20, $3c, $22, $22, $1c, 0, $3e, 2, 4, 8, $10, $20, $20, 0, $1c, $22, $22, $1c, $22, $22, $1c, 0, $1c, $22, $22, $1e, 2, 4, $38, 0, 0, 0, 8, 0, 8, 0, 0, 0, 0, 0, 8, 0, 8, 8, $10, 0, 4, 8, $10, $20, $10, 8, 4, 0, 0, 0, $3e, 0, $3e, 0, 0, 0, $10, 8, 4, 2, 4, 8, $10, 0, $1c, $22, 4, 8, 8, 0, 8, 0, $1c, $22, $2a, $2e, $2c, $20, $1c, 0, 8, $14, $22, $22, $3e, $22, $22, 0, $3c, $22, $22, $3c, $22, $22, $3c, 0, $1c, $22, $20, $20, $20, $22, $1c, 0, $38, $24, $22, $22, $22, $24, $38, 0, $3e, $20, $20, $38, $20, $20, $3e, 0, $3e, $20, $20, $38, $20, $20, $20, 0, $1e, $20, $20, $20, $26, $22, $1e, 0, $22, $22, $22, $3e, $22, $22, $22, 0, $1c, 8, 8, 8, 8, 8, $1c, 0, 2, 2, 2, 2, 2, $22, $1c, 0, $22, $24, $28, $30, $28, $24, $22, 0, $20, $20, $20, $20, $20, $20, $3e, 0, $22, $36, $2a, $2a, $22, $22, $22, 0, $22, $22, $32, $2a, $26, $22, $22, 0, $1c, $22, $22, $22, $22, $22, $1c, 0, $3c, $22, $22, $3c, $20, $20, $20, 0, $1c, $22, $22, $22, $2a, $24, $1a, 0, $3c, $22, $22, $3c, $28, $24, $22, 0, $1c, $22, $20, $1c, 2, $22, $1c, 0, $3e, 8, 8, 8, 8, 8, 8, 0, $22, $22, $22, $22, $22, $22, $1c, 0, $22, $22, $22, $22, $22, $14, 8, 0, $22, $22, $22, $2a, $2a, $36, $22, 0, $22, $22, $14, 8, $14, $22, $22, 0, $22, $22, $14, 8, 8, 8, 8, 0, $3e, 2, 4, 8, $10, $20, $3e, 0, $3e, $30, $30, $30, $30, $30, $3e, 0, 0, $20, $10, 8, 4, 2, 0, 0, $3e, 6, 6, 6, 6, 6, $3e, 0, 8, $14, $22, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, $3e, $10, 8, 4, 0, 0, 0, 0, 0, 0, 0, $1c, 2, $1e, $22, $1e, 0, $20, $20, $3c, $22, $22, $22, $3c, 0, 0, 0, $1e, $20, $20, $20, $1e, 0, 2, 2, $1e, $22, $22, $22, $1e, 0, 0, 0, $1c, $22, $3e, $20, $1e, 0, $c, $12, $10, $3c, $10, $10, $10, 0, 0, 0, $1c, $22, $22, $1e, 2, $1c, $20, $20, $3c, $22, $22, $22, $22, 0, 8, 0, $18, 8, 8, 8, $1c, 0, 2, 0, 6, 2, 2, 2, $12, $c, $20, $20, $22, $24, $38, $24, $22, 0, $18, 8, 8, 8, 8, 8, $1c, 0, 0, 0, $34, $2a, $2a, $2a, $22, 0, 0, 0, $3c, $22, $22, $22, $22, 0, 0, 0, $1c, $22, $22, $22, $1c, 0, 0, 0, $3c, $22, $22, $3c, $20, $20, 0, 0, $1e, $22, $22, $1e, 2, 2, 0, 0, $2e, $30, $20, $20, $20, 0, 0, 0, $1e, $20, $1c, 2, $3c, 0, $10, $10, $3c, $10, $10, $12, $c, 0, 0, 0, $22, $22, $22, $26, $1a, 0, 0, 0, $22, $22, $22, $14, 8, 0, 0, 0, $22, $22, $2a, $2a, $14, 0, 0, 0, $22, $14, 8, $14, $22, 0, 0, 0, $22, $24, $14, $18, 8, $30, 0, 0, $3e, 4, 8, $10, $3e, 0, 6, 8, 8, $30, 8, 8, 6, 0, 8, 8, 8, 8, 8, 8, 8, 8, $30, 8, 8, 6, 8, 8, $30, 0, $1a, $2c, 0, 0, 0, 0, 0, 0
|
||||
.fill 8, 0
|
||||
SCREEN1_TABLE: .byte 0, $c0, 5, $80, 1, $20, 0, $25
|
||||
SCREEN2_TABLE: .byte 2, $c0, $e, $ff, 3, $76, 3, $25
|
||||
s: .text "*** P-LAB VIDEO CARD SYSTEM ***"
|
||||
.byte 0
|
||||
s1: .text "16K VRAM BYTES FREE"
|
||||
.byte 0
|
||||
s2: .text "READY."
|
||||
.byte 0
|
||||
853
test_vic20.asm
853
test_vic20.asm
|
|
@ -1,853 +0,0 @@
|
|||
// TODO verificare NOPs
|
||||
// Commodore VIC 20 executable PRG file
|
||||
.file [name="test.prg", type="prg", segments="Program"]
|
||||
.segmentdef Program [segments="Basic, Code, Data"]
|
||||
.segmentdef Basic [start=$1001]
|
||||
.segmentdef Code [start=$100d]
|
||||
.segmentdef Data [startAfter="Code"]
|
||||
.segment Basic
|
||||
:BasicUpstart(main)
|
||||
// VIC20
|
||||
.const ECHO = $ffd2
|
||||
// chrout routine in kernal rom
|
||||
.const GETIN = $ffe4
|
||||
// TMS9918 interface flags
|
||||
.const WRITE_TO_REG = $80
|
||||
.const WRITE_TO_VRAM = $40
|
||||
// sprite patterns: $0000
|
||||
// pattern table: $0800 (256*8)
|
||||
// sprite attributes: $1000
|
||||
// unused: $1080
|
||||
// name table: $1400 (32*24)
|
||||
// unused: $1800
|
||||
// color table: $2000 (32)
|
||||
// unused $2020-$3FFF
|
||||
.const SCREEN1_PATTERN_TABLE = $800
|
||||
.const SCREEN1_NAME_TABLE = $1400
|
||||
.const SCREEN1_COLOR_TABLE = $2000
|
||||
.const SCREEN1_SPRITE_PATTERNS = 0
|
||||
.const SCREEN1_SPRITE_ATTRS = $1000
|
||||
.const SCREEN1_SIZE = $20*$18
|
||||
// pattern table: $0000-$17FF (256*8*3)
|
||||
// sprite patterns: $1800-$19FF
|
||||
// color table: $2000-$27FF (256*8*3)
|
||||
// name table: $3800-$3AFF (32*24 = 256*3 = 768)
|
||||
// sprite attributes: $3B00-$3BFF
|
||||
// unused $3C00-$3FFF
|
||||
//
|
||||
.const SCREEN2_PATTERN_TABLE = 0
|
||||
.const SCREEN2_NAME_TABLE = $3800
|
||||
.const SCREEN2_COLOR_TABLE = $2000
|
||||
.const SCREEN2_SPRITE_PATTERNS = $1800
|
||||
.const SCREEN2_SPRITE_ATTRS = $3b00
|
||||
.const SCREEN2_SIZE = $20*$18
|
||||
// GETIN keyboard read routine
|
||||
.label VDP_DATA = $a000
|
||||
// TMS9918 data port (VRAM)
|
||||
.label VDP_REG = $a001
|
||||
.label screen1_cursor = $d
|
||||
.segment Code
|
||||
main: {
|
||||
lda #<0
|
||||
sta.z screen1_cursor
|
||||
sta.z screen1_cursor+1
|
||||
ldx #'1'
|
||||
__b1:
|
||||
cpx #'1'
|
||||
beq __b2
|
||||
cpx #'2'
|
||||
beq __b3
|
||||
cpx #$d
|
||||
beq __b4
|
||||
stx.z woz_putc.c
|
||||
jsr woz_putc
|
||||
__b5:
|
||||
jsr woz_getkey
|
||||
tax
|
||||
jmp __b1
|
||||
__b4:
|
||||
lda #$2a
|
||||
sta.z woz_putc.c
|
||||
jsr woz_putc
|
||||
rts
|
||||
__b3:
|
||||
jsr prova_screen2
|
||||
jmp __b5
|
||||
__b2:
|
||||
jsr prova_screen1
|
||||
jmp __b5
|
||||
}
|
||||
// puts a character on the apple1 screen using the WOZMON routine
|
||||
// woz_putc(byte zp($11) c)
|
||||
woz_putc: {
|
||||
.label c = $11
|
||||
lda c
|
||||
jsr ECHO
|
||||
rts
|
||||
}
|
||||
// reads a key from the apple-1 keyboard
|
||||
woz_getkey: {
|
||||
.label keyptr = key
|
||||
.label key = $12
|
||||
lda #0
|
||||
sta.z key
|
||||
__wait:
|
||||
jsr GETIN
|
||||
cmp #0
|
||||
beq __wait
|
||||
sta keyptr
|
||||
|
||||
rts
|
||||
}
|
||||
prova_screen2: {
|
||||
.label i = 2
|
||||
.label i1 = 3
|
||||
lda #<SCREEN2_TABLE
|
||||
sta.z SCREEN_INIT.table
|
||||
lda #>SCREEN2_TABLE
|
||||
sta.z SCREEN_INIT.table+1
|
||||
jsr SCREEN_INIT
|
||||
jsr SCREEN2_FILL
|
||||
jsr screen2_square_sprites
|
||||
lda #$1f
|
||||
sta.z SCREEN2_PUTS.col
|
||||
lda #0
|
||||
sta.z SCREEN2_PUTS.y
|
||||
sta.z SCREEN2_PUTS.x
|
||||
lda #<s
|
||||
sta.z SCREEN2_PUTS.s
|
||||
lda #>s
|
||||
sta.z SCREEN2_PUTS.s+1
|
||||
jsr SCREEN2_PUTS
|
||||
lda #$1f
|
||||
sta.z SCREEN2_PUTS.col
|
||||
lda #2
|
||||
sta.z SCREEN2_PUTS.y
|
||||
lda #0
|
||||
sta.z SCREEN2_PUTS.x
|
||||
lda #<s1
|
||||
sta.z SCREEN2_PUTS.s
|
||||
lda #>s1
|
||||
sta.z SCREEN2_PUTS.s+1
|
||||
jsr SCREEN2_PUTS
|
||||
lda #$1f
|
||||
sta.z SCREEN2_PUTS.col
|
||||
lda #4
|
||||
sta.z SCREEN2_PUTS.y
|
||||
lda #0
|
||||
sta.z SCREEN2_PUTS.x
|
||||
lda #<s2
|
||||
sta.z SCREEN2_PUTS.s
|
||||
lda #>s2
|
||||
sta.z SCREEN2_PUTS.s+1
|
||||
jsr SCREEN2_PUTS
|
||||
lda #0
|
||||
sta.z i
|
||||
__b1:
|
||||
lda.z i
|
||||
cmp #$10
|
||||
bcc __b2
|
||||
lda #0
|
||||
sta.z i1
|
||||
__b3:
|
||||
lda.z i1
|
||||
cmp #$c0
|
||||
bcc __b4
|
||||
rts
|
||||
__b4:
|
||||
lda.z i1
|
||||
lsr
|
||||
tax
|
||||
lda.z i1
|
||||
sta.z SCREEN2_PSET.x
|
||||
jsr SCREEN2_PSET
|
||||
lda.z i1
|
||||
sta.z SCREEN2_PSET.x
|
||||
ldx.z i1
|
||||
jsr SCREEN2_PSET
|
||||
lda.z i1
|
||||
lsr
|
||||
sta.z SCREEN2_PSET.x
|
||||
ldx.z i1
|
||||
jsr SCREEN2_PSET
|
||||
inc.z i1
|
||||
jmp __b3
|
||||
__b2:
|
||||
lax.z i
|
||||
axs #-[6]
|
||||
stx.z SCREEN2_PUTS.y
|
||||
lda #$f
|
||||
sec
|
||||
sbc.z i
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
clc
|
||||
adc.z i
|
||||
sta.z SCREEN2_PUTS.col
|
||||
lda #5
|
||||
sta.z SCREEN2_PUTS.x
|
||||
lda #<s3
|
||||
sta.z SCREEN2_PUTS.s
|
||||
lda #>s3
|
||||
sta.z SCREEN2_PUTS.s+1
|
||||
jsr SCREEN2_PUTS
|
||||
inc.z i
|
||||
jmp __b1
|
||||
.segment Data
|
||||
s3: .text " SCREEN 2 "
|
||||
.byte 0
|
||||
}
|
||||
.segment Code
|
||||
prova_screen1: {
|
||||
.label i = 4
|
||||
lda #<SCREEN1_TABLE
|
||||
sta.z SCREEN_INIT.table
|
||||
lda #>SCREEN1_TABLE
|
||||
sta.z SCREEN_INIT.table+1
|
||||
jsr SCREEN_INIT
|
||||
jsr SCREEN1_FILL
|
||||
jsr SCREEN1_LOAD_FONT
|
||||
lda #<SCREEN1_NAME_TABLE
|
||||
sta.z screen1_cursor
|
||||
lda #>SCREEN1_NAME_TABLE
|
||||
sta.z screen1_cursor+1
|
||||
lda #<s
|
||||
sta.z SCREEN1_PUTS.s
|
||||
lda #>s
|
||||
sta.z SCREEN1_PUTS.s+1
|
||||
jsr SCREEN1_PUTS
|
||||
lda #2
|
||||
jsr SCREEN1_LOCATEXY
|
||||
lda #<s1
|
||||
sta.z SCREEN1_PUTS.s
|
||||
lda #>s1
|
||||
sta.z SCREEN1_PUTS.s+1
|
||||
jsr SCREEN1_PUTS
|
||||
lda #4
|
||||
jsr SCREEN1_LOCATEXY
|
||||
lda #<s2
|
||||
sta.z SCREEN1_PUTS.s
|
||||
lda #>s2
|
||||
sta.z SCREEN1_PUTS.s+1
|
||||
jsr SCREEN1_PUTS
|
||||
lda #$a
|
||||
jsr SCREEN1_LOCATEXY
|
||||
lda #<0
|
||||
sta.z i
|
||||
sta.z i+1
|
||||
__b1:
|
||||
lda.z i+1
|
||||
cmp #>$100
|
||||
bcc __b2
|
||||
bne !+
|
||||
lda.z i
|
||||
cmp #<$100
|
||||
bcc __b2
|
||||
!:
|
||||
jsr screen1_square_sprites
|
||||
rts
|
||||
__b2:
|
||||
lda.z i
|
||||
tay
|
||||
jsr SCREEN1_PUTCHAR
|
||||
inc.z i
|
||||
bne !+
|
||||
inc.z i+1
|
||||
!:
|
||||
jmp __b1
|
||||
}
|
||||
// SCREEN_INIT(byte* zp($15) table)
|
||||
SCREEN_INIT: {
|
||||
.label table = $15
|
||||
ldy #0
|
||||
__b1:
|
||||
cpy #8
|
||||
bcc __b2
|
||||
rts
|
||||
__b2:
|
||||
tya
|
||||
tax
|
||||
lda (table),y
|
||||
jsr write_reg
|
||||
iny
|
||||
jmp __b1
|
||||
}
|
||||
SCREEN2_FILL: {
|
||||
.label i = 4
|
||||
.label i1 = $15
|
||||
.label i2 = 9
|
||||
// fills name table x3 with increasing numbers
|
||||
lda #<SCREEN2_NAME_TABLE
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN2_NAME_TABLE
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
lda #<0
|
||||
sta.z i
|
||||
sta.z i+1
|
||||
__b1:
|
||||
lda.z i+1
|
||||
cmp #>SCREEN2_SIZE
|
||||
bcc __b2
|
||||
bne !+
|
||||
lda.z i
|
||||
cmp #<SCREEN2_SIZE
|
||||
bcc __b2
|
||||
!:
|
||||
// fill pattern table with 0 (clear screen)
|
||||
lda #<SCREEN2_PATTERN_TABLE
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN2_PATTERN_TABLE
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
lda #<$300*8
|
||||
sta.z i1
|
||||
lda #>$300*8
|
||||
sta.z i1+1
|
||||
__b4:
|
||||
lda.z i1
|
||||
ora.z i1+1
|
||||
bne __b5
|
||||
// fill color table with $1F
|
||||
lda #<SCREEN2_COLOR_TABLE
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN2_COLOR_TABLE
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
lda #<$300*8
|
||||
sta.z i2
|
||||
lda #>$300*8
|
||||
sta.z i2+1
|
||||
__b7:
|
||||
lda.z i2
|
||||
ora.z i2+1
|
||||
bne __b8
|
||||
rts
|
||||
__b8:
|
||||
lda #$1f
|
||||
sta VDP_DATA
|
||||
lda.z i2
|
||||
bne !+
|
||||
dec.z i2+1
|
||||
!:
|
||||
dec.z i2
|
||||
jmp __b7
|
||||
__b5:
|
||||
lda #0
|
||||
sta VDP_DATA
|
||||
lda.z i1
|
||||
bne !+
|
||||
dec.z i1+1
|
||||
!:
|
||||
dec.z i1
|
||||
jmp __b4
|
||||
__b2:
|
||||
lda #$ff
|
||||
and.z i
|
||||
sta VDP_DATA
|
||||
inc.z i
|
||||
bne !+
|
||||
inc.z i+1
|
||||
!:
|
||||
jmp __b1
|
||||
}
|
||||
screen2_square_sprites: {
|
||||
// fills first sprite pattern with 255
|
||||
lda #<SCREEN2_SPRITE_PATTERNS
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN2_SPRITE_PATTERNS
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldx #0
|
||||
// start writing in the sprite patterns
|
||||
__b1:
|
||||
cpx #8
|
||||
bcc __b2
|
||||
// set sprite coordinates
|
||||
lda #<SCREEN2_SPRITE_ATTRS
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN2_SPRITE_ATTRS
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldx #0
|
||||
// start writing in the sprite attribute
|
||||
__b4:
|
||||
cpx #$20
|
||||
bcc __b5
|
||||
rts
|
||||
__b5:
|
||||
lda #0
|
||||
sta VDP_DATA
|
||||
sta VDP_DATA
|
||||
sta VDP_DATA
|
||||
stx VDP_DATA
|
||||
inx
|
||||
jmp __b4
|
||||
__b2:
|
||||
lda #0
|
||||
sta VDP_DATA
|
||||
inx
|
||||
jmp __b1
|
||||
}
|
||||
// SCREEN2_PUTS(byte zp(8) x, byte zp(6) y, byte zp(7) col, byte* zp(9) s)
|
||||
SCREEN2_PUTS: {
|
||||
.label s = 9
|
||||
.label x = 8
|
||||
.label y = 6
|
||||
.label col = 7
|
||||
__b1:
|
||||
ldy #0
|
||||
lda (s),y
|
||||
inc.z s
|
||||
bne !+
|
||||
inc.z s+1
|
||||
!:
|
||||
cmp #0
|
||||
bne __b2
|
||||
rts
|
||||
__b2:
|
||||
tay
|
||||
lda.z x
|
||||
sta.z SCREEN2_PUTC.x
|
||||
lda.z y
|
||||
sta.z SCREEN2_PUTC.y
|
||||
ldx.z col
|
||||
jsr SCREEN2_PUTC
|
||||
inc.z x
|
||||
jmp __b1
|
||||
}
|
||||
// SCREEN2_PSET(byte zp($13) x, byte register(X) y)
|
||||
SCREEN2_PSET: {
|
||||
.label __1 = $f
|
||||
.label __3 = $15
|
||||
.label __4 = $f
|
||||
.label __12 = $15
|
||||
.label paddr = $f
|
||||
.label data = $14
|
||||
.label x = $13
|
||||
lda #$f8
|
||||
and.z x
|
||||
sta.z __1
|
||||
lda #0
|
||||
sta.z __1+1
|
||||
txa
|
||||
and #$f8
|
||||
sta.z __12
|
||||
lda #0
|
||||
sta.z __12+1
|
||||
asl.z __3
|
||||
rol.z __3+1
|
||||
asl.z __3
|
||||
rol.z __3+1
|
||||
asl.z __3
|
||||
rol.z __3+1
|
||||
asl.z __3
|
||||
rol.z __3+1
|
||||
asl.z __3
|
||||
rol.z __3+1
|
||||
lda.z __4
|
||||
clc
|
||||
adc.z __3
|
||||
sta.z __4
|
||||
lda.z __4+1
|
||||
adc.z __3+1
|
||||
sta.z __4+1
|
||||
txa
|
||||
and #8-1
|
||||
clc
|
||||
adc.z paddr
|
||||
sta.z paddr
|
||||
bcc !+
|
||||
inc.z paddr+1
|
||||
!:
|
||||
lda.z paddr
|
||||
sta.z set_vram_read_addr.addr
|
||||
lda.z paddr+1
|
||||
sta.z set_vram_read_addr.addr+1
|
||||
jsr set_vram_read_addr
|
||||
lda VDP_DATA
|
||||
sta.z data
|
||||
jsr set_vram_write_addr
|
||||
lda #8-1
|
||||
and.z x
|
||||
tay
|
||||
lda pow2_table,y
|
||||
ora.z data
|
||||
sta VDP_DATA
|
||||
rts
|
||||
.segment Data
|
||||
pow2_table: .byte $80, $40, $20, $10, 8, 4, 2, 1
|
||||
}
|
||||
.segment Code
|
||||
SCREEN1_FILL: {
|
||||
.label i = $15
|
||||
.label i1 = 9
|
||||
// fills name table with spaces (32)
|
||||
lda #<SCREEN1_NAME_TABLE
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_NAME_TABLE
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
lda #<SCREEN1_SIZE
|
||||
sta.z i
|
||||
lda #>SCREEN1_SIZE
|
||||
sta.z i+1
|
||||
__b1:
|
||||
lda.z i
|
||||
ora.z i+1
|
||||
bne __b2
|
||||
// fill pattern table with 0
|
||||
lda #<SCREEN1_PATTERN_TABLE
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_PATTERN_TABLE
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
lda #<$100*8
|
||||
sta.z i1
|
||||
lda #>$100*8
|
||||
sta.z i1+1
|
||||
__b4:
|
||||
lda.z i1
|
||||
ora.z i1+1
|
||||
bne __b5
|
||||
// fill color table with $1F
|
||||
lda #<SCREEN1_COLOR_TABLE
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_COLOR_TABLE
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldx #$20
|
||||
__b7:
|
||||
cpx #0
|
||||
bne __b8
|
||||
rts
|
||||
__b8:
|
||||
lda #$1f
|
||||
sta VDP_DATA
|
||||
dex
|
||||
jmp __b7
|
||||
__b5:
|
||||
lda #0
|
||||
sta VDP_DATA
|
||||
lda.z i1
|
||||
bne !+
|
||||
dec.z i1+1
|
||||
!:
|
||||
dec.z i1
|
||||
jmp __b4
|
||||
__b2:
|
||||
lda #$20
|
||||
sta VDP_DATA
|
||||
lda.z i
|
||||
bne !+
|
||||
dec.z i+1
|
||||
!:
|
||||
dec.z i
|
||||
jmp __b1
|
||||
}
|
||||
// loads the Laser 500 font on the pattern table
|
||||
SCREEN1_LOAD_FONT: {
|
||||
// reverse font (32..127)
|
||||
.label source = 9
|
||||
.label i = $15
|
||||
// reverse font (32..127)
|
||||
.label source_1 = $d
|
||||
.label i_1 = $b
|
||||
// start writing into VRAM from space character (32..127)
|
||||
lda #<SCREEN1_PATTERN_TABLE+$20*8
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_PATTERN_TABLE+$20*8
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
lda #<FONT
|
||||
sta.z source
|
||||
lda #>FONT
|
||||
sta.z source+1
|
||||
lda #<$300
|
||||
sta.z i
|
||||
lda #>$300
|
||||
sta.z i+1
|
||||
__b1:
|
||||
lda.z i
|
||||
ora.z i+1
|
||||
bne __b2
|
||||
lda #<SCREEN1_PATTERN_TABLE+($80+$20)*8
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_PATTERN_TABLE+($80+$20)*8
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
lda #<FONT
|
||||
sta.z source_1
|
||||
lda #>FONT
|
||||
sta.z source_1+1
|
||||
lda #<$300
|
||||
sta.z i_1
|
||||
lda #>$300
|
||||
sta.z i_1+1
|
||||
__b4:
|
||||
lda.z i_1
|
||||
ora.z i_1+1
|
||||
bne __b5
|
||||
rts
|
||||
__b5:
|
||||
ldy #0
|
||||
lda (source_1),y
|
||||
eor #$ff
|
||||
sta VDP_DATA
|
||||
inc.z source_1
|
||||
bne !+
|
||||
inc.z source_1+1
|
||||
!:
|
||||
lda.z i_1
|
||||
bne !+
|
||||
dec.z i_1+1
|
||||
!:
|
||||
dec.z i_1
|
||||
jmp __b4
|
||||
__b2:
|
||||
ldy #0
|
||||
lda (source),y
|
||||
sta VDP_DATA
|
||||
inc.z source
|
||||
bne !+
|
||||
inc.z source+1
|
||||
!:
|
||||
lda.z i
|
||||
bne !+
|
||||
dec.z i+1
|
||||
!:
|
||||
dec.z i
|
||||
jmp __b1
|
||||
}
|
||||
// prints 0 terminated string pointed by YA
|
||||
// SCREEN1_PUTS(byte* zp($b) s)
|
||||
SCREEN1_PUTS: {
|
||||
.label s = $b
|
||||
__b1:
|
||||
ldy #0
|
||||
lda (s),y
|
||||
inc.z s
|
||||
bne !+
|
||||
inc.z s+1
|
||||
!:
|
||||
cmp #0
|
||||
bne __b2
|
||||
rts
|
||||
__b2:
|
||||
tay
|
||||
jsr SCREEN1_PUTCHAR
|
||||
jmp __b1
|
||||
}
|
||||
// SCREEN1_LOCATEXY(byte register(A) y)
|
||||
SCREEN1_LOCATEXY: {
|
||||
.label __0 = $d
|
||||
.label __3 = $d
|
||||
sta.z __3
|
||||
lda #0
|
||||
sta.z __3+1
|
||||
asl.z __0
|
||||
rol.z __0+1
|
||||
asl.z __0
|
||||
rol.z __0+1
|
||||
asl.z __0
|
||||
rol.z __0+1
|
||||
asl.z __0
|
||||
rol.z __0+1
|
||||
asl.z __0
|
||||
rol.z __0+1
|
||||
clc
|
||||
lda.z screen1_cursor
|
||||
adc #<SCREEN1_NAME_TABLE
|
||||
sta.z screen1_cursor
|
||||
lda.z screen1_cursor+1
|
||||
adc #>SCREEN1_NAME_TABLE
|
||||
sta.z screen1_cursor+1
|
||||
rts
|
||||
}
|
||||
screen1_square_sprites: {
|
||||
// fills first sprite pattern with 255
|
||||
lda #<SCREEN1_SPRITE_PATTERNS
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_SPRITE_PATTERNS
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldx #0
|
||||
// start writing in the sprite patterns
|
||||
__b1:
|
||||
cpx #8
|
||||
bcc __b2
|
||||
// set sprite coordinates
|
||||
lda #<SCREEN1_SPRITE_ATTRS
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda #>SCREEN1_SPRITE_ATTRS
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldy #0
|
||||
// start writing in the sprite attribute
|
||||
__b4:
|
||||
cpy #$20
|
||||
bcc __b5
|
||||
rts
|
||||
__b5:
|
||||
tya
|
||||
clc
|
||||
adc #6
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
sta VDP_DATA
|
||||
tya
|
||||
clc
|
||||
adc #6
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
sta VDP_DATA
|
||||
lda #0
|
||||
sta VDP_DATA
|
||||
sty VDP_DATA
|
||||
iny
|
||||
jmp __b4
|
||||
__b2:
|
||||
lda #$ff
|
||||
sta VDP_DATA
|
||||
inx
|
||||
jmp __b1
|
||||
}
|
||||
// prints character to TMS (SCREEN 1 MODE)
|
||||
// SCREEN1_PUTCHAR(byte register(Y) c)
|
||||
SCREEN1_PUTCHAR: {
|
||||
lda.z screen1_cursor
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda.z screen1_cursor+1
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
inc.z screen1_cursor
|
||||
bne !+
|
||||
inc.z screen1_cursor+1
|
||||
!:
|
||||
sty VDP_DATA
|
||||
rts
|
||||
}
|
||||
// writes a value to a TMS9918 register (0-7)
|
||||
// write_reg(byte register(X) regnum, byte register(A) val)
|
||||
write_reg: {
|
||||
sta VDP_REG
|
||||
txa
|
||||
and #$f
|
||||
ora #WRITE_TO_REG
|
||||
sta VDP_REG
|
||||
rts
|
||||
}
|
||||
// sets the VRAM write address on the TMS9918
|
||||
// set_vram_write_addr(word zp($f) addr)
|
||||
set_vram_write_addr: {
|
||||
.label addr = $f
|
||||
lda.z addr
|
||||
sta VDP_REG
|
||||
lda.z addr+1
|
||||
and #$3f
|
||||
ora #WRITE_TO_VRAM
|
||||
sta VDP_REG
|
||||
rts
|
||||
}
|
||||
// SCREEN2_PUTC(byte register(Y) ch, byte zp($13) x, byte zp($14) y, byte register(X) col)
|
||||
SCREEN2_PUTC: {
|
||||
.label __1 = $15
|
||||
.label __4 = $17
|
||||
.label __12 = $15
|
||||
.label source = $15
|
||||
.label addr = $17
|
||||
.label x = $13
|
||||
.label y = $14
|
||||
tya
|
||||
sec
|
||||
sbc #$20
|
||||
sta.z __12
|
||||
lda #0
|
||||
sta.z __12+1
|
||||
asl.z __1
|
||||
rol.z __1+1
|
||||
asl.z __1
|
||||
rol.z __1+1
|
||||
asl.z __1
|
||||
rol.z __1+1
|
||||
clc
|
||||
lda.z source
|
||||
adc #<FONT
|
||||
sta.z source
|
||||
lda.z source+1
|
||||
adc #>FONT
|
||||
sta.z source+1
|
||||
lda.z x
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
tay
|
||||
lda.z y
|
||||
sta.z __4+1
|
||||
lda #0
|
||||
sta.z __4
|
||||
tya
|
||||
clc
|
||||
adc.z addr
|
||||
sta.z addr
|
||||
bcc !+
|
||||
inc.z addr+1
|
||||
!:
|
||||
lda.z addr
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda.z addr+1
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldy #0
|
||||
__b1:
|
||||
cpy #8
|
||||
bcc __b2
|
||||
clc
|
||||
lda.z addr
|
||||
adc #<SCREEN2_COLOR_TABLE
|
||||
sta.z set_vram_write_addr.addr
|
||||
lda.z addr+1
|
||||
adc #>SCREEN2_COLOR_TABLE
|
||||
sta.z set_vram_write_addr.addr+1
|
||||
jsr set_vram_write_addr
|
||||
ldy #0
|
||||
__b4:
|
||||
cpy #8
|
||||
bcc __b5
|
||||
rts
|
||||
__b5:
|
||||
stx VDP_DATA
|
||||
iny
|
||||
jmp __b4
|
||||
__b2:
|
||||
lda (source),y
|
||||
sta VDP_DATA
|
||||
iny
|
||||
jmp __b1
|
||||
}
|
||||
// sets the VRAM read address on the TMS9918
|
||||
// set_vram_read_addr(word zp($17) addr)
|
||||
set_vram_read_addr: {
|
||||
.label addr = $17
|
||||
lda.z addr
|
||||
sta VDP_REG
|
||||
lda.z addr+1
|
||||
and #$3f
|
||||
sta VDP_REG
|
||||
rts
|
||||
}
|
||||
.segment Data
|
||||
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|
||||
.fill 8, 0
|
||||
SCREEN1_TABLE: .byte 0, $c0, 5, $80, 1, $20, 0, $25
|
||||
SCREEN2_TABLE: .byte 2, $c0, $e, $ff, 3, $76, 3, $25
|
||||
s: .text "*** P-LAB VIDEO CARD SYSTEM ***"
|
||||
.byte 0
|
||||
s1: .text "16K VRAM BYTES FREE"
|
||||
.byte 0
|
||||
s2: .text "READY."
|
||||
.byte 0
|
||||
Loading…
Reference in New Issue