switch to KickC compiler
This commit is contained in:
nino-porcino
parent
52c825f19b
commit
f7fe27e98b
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@ -1,6 +0,0 @@
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@echo *** APPLE 1 ***
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call kickc -t asm6502 -D=APPLE1 test.c -o test_apple1.prg -e
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copy test.prg test_apple1.prg
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@echo *** VIC20 ***
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call kickc -t VIC20 -D=VIC20 test.c -o test_vic20.prg -e
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copy test.prg test_vic20.prg
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305
KickC/test.c
305
KickC/test.c
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@ -1,305 +0,0 @@
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#ifdef APPLE1
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// APPLE1
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const word WOZMON = 0xFF1F; // enters monitor
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const word ECHO = 0xFFEF; // output ascii character in A (A not destroyed)
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const word PRBYTE = 0xFFDC; // print hex byte in A (A destroyed)
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const word VDP_DATA = 0xC000; // TMS9918 data port (VRAM)
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const word VDP_REG = 0xC001; // TMS9918 register port (write) or status (read)
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#else
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// VIC20
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const word ECHO = 0xFFD2; // chrout routine in kernal rom
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const word VDP_DATA = 0xA000; // TMS9918 data port (VRAM)
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const word VDP_REG = 0xA001; // TMS9918 register port (write) or status (read)
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#endif
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// typedef unsigned char byte;
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// typedef unsigned int word;
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// TMS9918 interface flags
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const byte WRITE_TO_REG = 0b10000000;
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const byte WRITE_TO_VRAM = 0b01000000;
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const byte READ_FROM_VRAM = 0b00000000;
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#define POKE(a,b) (*((byte *)(a))=(byte)(b))
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#define PEEK(a) (*((byte *)(a)))
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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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// sets the VRAM address on the TMS9918
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void set_vram_addr(word addr) {
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POKE(VDP_REG,<addr);
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POKE(VDP_REG,(>addr & 0b00111111)|WRITE_TO_VRAM);
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}
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// sets the VRAM address on the TMS9918
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void set_vram_read_addr(word addr) {
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POKE(VDP_REG,<addr);
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POKE(VDP_REG,(>addr & 0b00111111)|READ_FROM_VRAM);
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}
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// writes a value to a TMS9918 register (0-7)
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void write_reg(byte regnum, byte val) {
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// nops are not required
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POKE(VDP_REG, val);
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POKE(VDP_REG, (regnum & 0b00001111)|WRITE_TO_REG);
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}
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word tms_cursor;
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#include "laser500_font.ascii.c"
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// SCREEN 1 VALUES
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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 word SCREEN1_PATTERN_TABLE = 0x0800;
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const word SCREEN1_NAME_TABLE = 0x1400;
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const word SCREEN1_COLOR_TABLE = 0x2000;
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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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static byte *source = FONT;
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static word i;
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// start writing into VRAM from space character
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set_vram_addr(SCREEN1_PATTERN_TABLE+(32*8));
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for(i=0;i<768;i++) {
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POKE(VDP_DATA, *source++);
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}
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// reverse font
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source = FONT;
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set_vram_addr(SCREEN1_PATTERN_TABLE+((128+32)*8));
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for(i=0;i<768;i++) {
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POKE(VDP_DATA, ~(*source++));
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}
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}
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// prints character to TMS (SCREEN 1 MODE)
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void SCREEN1_PUTCHAR(byte c) {
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set_vram_addr(tms_cursor++);
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POKE(VDP_DATA, c);
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}
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// prints 0 terminated string pointed by YA
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void SCREEN1_PUTS(byte *s) {
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while(*s) {
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SCREEN1_PUTCHAR(*s++);
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}
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}
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void SCREEN1_HOME() {
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tms_cursor = SCREEN1_NAME_TABLE;
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}
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void SCREEN1_LOCATEXY(byte x, byte y) {
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tms_cursor = SCREEN1_NAME_TABLE + ((word)y)*32 + x;
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}
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void SCREEN1_INIT() {
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for(byte i=0;i<8;i++) {
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write_reg(i, SCREEN1_TABLE[i]);
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}
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}
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void SCREEN1_FILL() {
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// fills name table with spaces (32)
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set_vram_addr(SCREEN1_NAME_TABLE);
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for(word i=0;i<SCREEN1_SIZE;i++) {
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POKE(VDP_DATA, 32);
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// nops here?
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}
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// fill pattern table with 0
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set_vram_addr(SCREEN1_PATTERN_TABLE);
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for(word i=0;i<256*8;i++) {
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POKE(VDP_DATA, 0);
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// nops here?
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}
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// fill color table with $1F
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set_vram_addr(SCREEN1_COLOR_TABLE);
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for(byte i=0;i<32;i++) {
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POKE(VDP_DATA, 0x1f);
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// nops here?
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}
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}
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// SCREEN 2 VALUES
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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 word SCREEN2_PATTERN_TABLE = 0x0000;
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const word SCREEN2_NAME_TABLE = 0x3800;
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const word SCREEN2_COLOR_TABLE = 0x2000;
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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 SCREEN2_INIT() {
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for(byte i=0;i<8;i++) {
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write_reg(i, SCREEN2_TABLE[i]);
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}
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}
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void SCREEN2_FILL() {
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// fills name table x3 with increasing numbers
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set_vram_addr(SCREEN2_NAME_TABLE);
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for(word i=0;i<SCREEN2_SIZE;i++) {
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POKE(VDP_DATA, i & 0xFF);
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}
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// fill pattern table with 0 (clear screen)
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set_vram_addr(SCREEN2_PATTERN_TABLE);
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for(word i=0;i<768*8;i++) {
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POKE(VDP_DATA, 0);
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}
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// fill color table with $1F
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set_vram_addr(SCREEN2_COLOR_TABLE);
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for(word i=0;i<768*8;i++) {
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POKE(VDP_DATA, 0x1f);
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}
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}
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void SCREEN2_PUTC(byte ch, byte x, byte y, byte col) {
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byte *source = &FONT[(word)(ch-32)*8];
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word paddr = SCREEN2_PATTERN_TABLE + x*8 + y*256;
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word caddr = SCREEN2_COLOR_TABLE + x*8 + y*256;
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set_vram_addr(paddr); for(byte i=0;i<8;i++) POKE(VDP_DATA, source[i]);
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set_vram_addr(caddr); for(byte i=0;i<8;i++) POKE(VDP_DATA, col);
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}
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void SCREEN2_PUTS(byte x, byte y, byte col, char *s) {
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while(*s) {
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SCREEN2_PUTC(*s++, x++, y, col);
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}
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}
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void SCREEN2_PSET(byte x, byte y) {
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word paddr = SCREEN2_PATTERN_TABLE + (word)(x & 0b11111000) + (word)(y & 0b11111000)*32 + y%8;
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byte pattern = 128 >> (x%8);
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byte data;
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set_vram_read_addr(paddr);
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data = PEEK(VDP_DATA);
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set_vram_addr(paddr);
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POKE(VDP_DATA,data | pattern);
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}
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void screen1_square_sprites() {
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// fills first sprite pattern with 255
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set_vram_addr(SCREEN1_SPRITE_PATTERNS); // start writing in the sprite patterns
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for(byte i=0;i<8;i++) {
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POKE(VDP_DATA, 255);
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}
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// set sprite coordinates
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set_vram_addr(SCREEN1_SPRITE_ATTRS); // start writing in the sprite attribute
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for(byte i=0;i<32;i++) {
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POKE(VDP_DATA,(6+i)*8); // y coordinate
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POKE(VDP_DATA,(6+i)*8); // x coordinate
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POKE(VDP_DATA,0); // name
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POKE(VDP_DATA,i); // color
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}
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}
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void screen2_square_sprites() {
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// fills first sprite pattern with 255
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set_vram_addr(SCREEN2_SPRITE_PATTERNS); // start writing in the sprite patterns
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for(byte i=0;i<8;i++) {
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POKE(VDP_DATA, 0);
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}
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// set sprite coordinates
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set_vram_addr(SCREEN2_SPRITE_ATTRS); // start writing in the sprite attribute
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for(byte i=0;i<32;i++) {
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POKE(VDP_DATA,0); // y coordinate
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POKE(VDP_DATA,0); // x coordinate
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POKE(VDP_DATA,0); // name
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POKE(VDP_DATA,i); // color
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}
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}
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void main() {
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if(1) {
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SCREEN1_INIT();
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SCREEN1_FILL();
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SCREEN1_LOAD_FONT();
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SCREEN1_HOME(); SCREEN1_PUTS("*** P-LAB VIDEO CARD SYSTEM ***");
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SCREEN1_LOCATEXY(0, 2); SCREEN1_PUTS("16K VRAM BYTES FREE");
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SCREEN1_LOCATEXY(0, 4); SCREEN1_PUTS("READY.");
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SCREEN1_LOCATEXY(0, 10);
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for(word i=0;i<256;i++) SCREEN1_PUTCHAR((byte)i);
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screen1_square_sprites();
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}
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if(0) {
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SCREEN2_INIT();
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SCREEN2_FILL();
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screen2_square_sprites();
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//SCREEN2_PUTC(65,1,1,0x1F);
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SCREEN2_PUTS(0,0,0x1F,"*** P-LAB VIDEO CARD SYSTEM ***");
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SCREEN2_PUTS(0,2,0x1F,"16K VRAM BYTES FREE");
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SCREEN2_PUTS(0,4,0x1F,"READY.");
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for(byte i=0;i<16;i++) {
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SCREEN2_PUTS(5,(byte)(6+i),(byte)(((15-i)<<4)+i)," COLOR ");
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}
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for(byte i=0;i<192;i++) {
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SCREEN2_PSET((byte)i ,(byte)i/2);
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SCREEN2_PSET((byte)i ,(byte)i);
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SCREEN2_PSET((byte)i/2,(byte)i);
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}
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}
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woz_putc(42);
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woz_mon();
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}
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@ -4,10 +4,10 @@ Library and demos for the Apple-1 TMS9918 video card by P-LAB.
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# USAGE (Windows)
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- `env.bat` sets CC65 path variable (run it once)
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- `env_kick.bat` sets KickC compiler path variable (run it once)
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- `c.bat` compiles `test.c` for both VIC-20 and Apple-1
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- `test_vic20.prg` runs on the "hybrid" VIC-20 emulator
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- `node hexdump` gives the output in WOZMON format for the Apple-1
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- `node hexdump` puts `test_apple1.prg` into WOZMON format for the Apple-1
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Note: Apple-1 start address is $4000, with TMS address range $C000-$C001
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10
c.bat
10
c.bat
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@ -1,4 +1,8 @@
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cl65 -D APPLE1 --target none --start-addr $4000 -O test.c -o test_apple1.prg
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cl65 --listing test.lst -D VIC20 --target vic20 -O test.c -o test_vic20.prg
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@echo ======================== APPLE 1 =================================================
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call kickc -t asm6502 -D=APPLE1 test.c -o test_apple1.prg -e
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copy test.prg test_apple1.prg
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@echo ======================== VIC20 ===================================================
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call kickc -t VIC20 -D=VIC20 test.c -o test_vic20.prg -e
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rem call kickc -vasmoptimize -vasmout -vcreate -vfragment -vliverange -vloop -vnonoptimize -voptimize -vparse -vsequence -vsizeinfo -vunroll -vuplift -t VIC20 -D=VIC20 test.c -o test_vic20.prg -e
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copy test.prg test_vic20.prg
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@ -0,0 +1,4 @@
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cl65 -D APPLE1 --target none --start-addr $4000 -O test.c -o test_apple1.prg
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cl65 --listing test.lst -D VIC20 --target vic20 -O test.c -o test_vic20.prg
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@ -0,0 +1,157 @@
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#ifdef APPLE1
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#define WOZMON 0xFF1F // enters monitor
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#define ECHO 0xFFEF // output ascii character in A (A not destroyed)
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#define PRBYTE 0xFFDC // print hex byte in A (A destroyed)
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#define VDP_DATA 0xC000 // TMS9918 data port (VRAM)
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#define VDP_REG 0xC001 // TMS9918 register port (write) or status (read)
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#endif
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#ifdef VIC20
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#define ECHO 0xFFD2 // chrout routine in kernal rom
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#define VDP_DATA 0xA000 // TMS9918 data port (VRAM)
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#define VDP_REG 0xA001 // TMS9918 register port (write) or status (read)
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#include "cbm_ascii_charmap.h" // allow VIC-20 to work with pure ASCII
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#endif
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// TMS9918 interface flags
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#define WRITE_TO_REG 0b10000000
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#define WRITE_TO_VRAM 0b01000000
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#define READ_FROM_VRAM 0b00000000
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// utils
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typedef unsigned char byte;
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typedef unsigned int word;
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#define POKE(a,b) (*((byte *)(a))=(byte)(b))
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#define PEEK(a) (*((byte *)(a)))
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// puts a character on the apple1 screen using the WOZMON routine
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void fastcall woz_putc(byte c) {
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asm("jsr %w", ECHO);
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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("jmp %w", WOZMON);
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#endif
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}
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// sets the VRAM address on the TMS9918
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void fastcall set_vram_addr(word addr) {
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asm("sta %w", VDP_REG); // write address low byte
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// nops here ?
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asm("txa"); // X = addres high byte
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asm("and #%b", 0b00111111); // mask address high byte
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asm("ora #%b", WRITE_TO_VRAM); // set "write to vram" flag bits "01" upper bits ("00" for read)
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asm("sta %w", VDP_REG); // write flags and address high byte
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// nops here ?
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}
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// sets the VRAM address on the TMS9918
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void fastcall set_vram_read_addr(word addr) {
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asm("sta %w", VDP_REG); // write address low byte
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// nops here ?
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asm("txa"); // X = addres high byte
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asm("and #%b", 0b00111111); // mask address high byte
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asm("ora #%b", READ_FROM_VRAM); // set "write to vram" flag bits "01" upper bits ("00" for read)
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asm("sta %w", VDP_REG); // write flags and address high byte
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// nops here ?
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}
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// writes a value to a TMS9918 register (0-7)
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void write_reg(byte regnum, byte val) {
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// nops are not required
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POKE(VDP_REG, val);
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POKE(VDP_REG, (regnum & 0b00001111)|WRITE_TO_REG);
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}
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static word tms_cursor;
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#include "laser500_font.ascii.c"
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#include "screen1.c"
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#include "screen2.c"
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void screen1_square_sprites() {
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static byte i;
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// fills first sprite pattern with 255
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set_vram_addr(SCREEN1_SPRITE_PATTERNS); // start writing in the sprite patterns
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for(i=0;i<8;i++) {
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POKE(VDP_DATA, 255);
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}
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// set sprite coordinates
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set_vram_addr(SCREEN1_SPRITE_ATTRS); // start writing in the sprite attribute
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for(i=0;i<32;i++) {
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||||
POKE(VDP_DATA,(6+i)*8); // y coordinate
|
||||
POKE(VDP_DATA,(6+i)*8); // x coordinate
|
||||
POKE(VDP_DATA,0); // name
|
||||
POKE(VDP_DATA,i); // color
|
||||
}
|
||||
}
|
||||
|
||||
void screen2_square_sprites() {
|
||||
static byte i;
|
||||
|
||||
// fills first sprite pattern with 255
|
||||
set_vram_addr(SCREEN2_SPRITE_PATTERNS); // start writing in the sprite patterns
|
||||
for(i=0;i<8;i++) {
|
||||
POKE(VDP_DATA, 0);
|
||||
}
|
||||
|
||||
// set sprite coordinates
|
||||
set_vram_addr(SCREEN2_SPRITE_ATTRS); // start writing in the sprite attribute
|
||||
for(i=0;i<32;i++) {
|
||||
POKE(VDP_DATA,0); // y coordinate
|
||||
POKE(VDP_DATA,0); // x coordinate
|
||||
POKE(VDP_DATA,0); // name
|
||||
POKE(VDP_DATA,i); // color
|
||||
}
|
||||
}
|
||||
|
||||
void main() {
|
||||
word i;
|
||||
|
||||
if(0) {
|
||||
SCREEN1_INIT();
|
||||
SCREEN1_FILL();
|
||||
SCREEN1_LOAD_FONT();
|
||||
|
||||
SCREEN1_HOME(); SCREEN1_PUTS("*** P-LAB VIDEO CARD SYSTEM ***");
|
||||
SCREEN1_LOCATEXY(0, 2); SCREEN1_PUTS("16K VRAM BYTES FREE");
|
||||
SCREEN1_LOCATEXY(0, 4); SCREEN1_PUTS("READY.");
|
||||
|
||||
SCREEN1_LOCATEXY(0, 10);
|
||||
for(i=0;i<256;i++) SCREEN1_PUTCHAR(i);
|
||||
|
||||
screen1_square_sprites();
|
||||
}
|
||||
|
||||
if(1) {
|
||||
SCREEN2_INIT();
|
||||
SCREEN2_FILL();
|
||||
screen2_square_sprites();
|
||||
//SCREEN2_PUTC(65,1,1,0x1F);
|
||||
|
||||
SCREEN2_PUTS(0,0,0x1F,"*** P-LAB VIDEO CARD SYSTEM ***");
|
||||
SCREEN2_PUTS(0,2,0x1F,"16K VRAM BYTES FREE");
|
||||
SCREEN2_PUTS(0,4,0x1F,"READY.");
|
||||
|
||||
for(i=0;i<16;i++) {
|
||||
SCREEN2_PUTS(5,6+i,((15-i)<<4)+i," COLOR ");
|
||||
}
|
||||
|
||||
for(i=0;i<192;i++) {
|
||||
SCREEN2_PSET(i,i/2);
|
||||
SCREEN2_PSET(i,i);
|
||||
SCREEN2_PSET(i/2,i);
|
||||
}
|
||||
}
|
||||
|
||||
woz_putc(42);
|
||||
woz_mon();
|
||||
}
|
||||
|
||||
389
test.c
389
test.c
|
|
@ -1,156 +1,337 @@
|
|||
// TODO verificare NOPs
|
||||
|
||||
#ifdef APPLE1
|
||||
#define WOZMON 0xFF1F // enters monitor
|
||||
#define ECHO 0xFFEF // output ascii character in A (A not destroyed)
|
||||
#define PRBYTE 0xFFDC // print hex byte in A (A destroyed)
|
||||
#define VDP_DATA 0xC000 // TMS9918 data port (VRAM)
|
||||
#define VDP_REG 0xC001 // TMS9918 register port (write) or status (read)
|
||||
// APPLE1
|
||||
#pragma start_address(0x4000)
|
||||
const word WOZMON = 0xFF1F; // enters monitor
|
||||
const word ECHO = 0xFFEF; // output ascii character in A (A not destroyed)
|
||||
const word PRBYTE = 0xFFDC; // print hex byte in A (A destroyed)
|
||||
const word KEY_DATA = 0xd010; // read key
|
||||
const word KEY_CTRL = 0xd011; // control port
|
||||
const word TERM_DATA = 0xd012; // write ascii
|
||||
const word TERM_CTRL = 0xd013; // control port
|
||||
|
||||
const byte *VDP_DATA = 0xC000; // TMS9918 data port (VRAM)
|
||||
const byte *VDP_REG = 0xC001; // TMS9918 register port (write) or status (read)
|
||||
#else
|
||||
// VIC20
|
||||
const word ECHO = 0xFFD2; // chrout routine in kernal rom
|
||||
const word GETIN = 0xFFE4; // GETIN keyboard read routine
|
||||
const byte *VDP_DATA = 0xA000; // TMS9918 data port (VRAM)
|
||||
const byte *VDP_REG = 0xA001; // TMS9918 register port (write) or status (read)
|
||||
#endif
|
||||
|
||||
#ifdef VIC20
|
||||
#define ECHO 0xFFD2 // chrout routine in kernal rom
|
||||
#define VDP_DATA 0xA000 // TMS9918 data port (VRAM)
|
||||
#define VDP_REG 0xA001 // TMS9918 register port (write) or status (read)
|
||||
|
||||
#include "cbm_ascii_charmap.h" // allow VIC-20 to work with pure ASCII
|
||||
|
||||
#endif
|
||||
// typedef unsigned char byte;
|
||||
// typedef unsigned int word;
|
||||
|
||||
// TMS9918 interface flags
|
||||
#define WRITE_TO_REG 0b10000000
|
||||
#define WRITE_TO_VRAM 0b01000000
|
||||
#define READ_FROM_VRAM 0b00000000
|
||||
|
||||
// utils
|
||||
typedef unsigned char byte;
|
||||
typedef unsigned int word;
|
||||
const byte WRITE_TO_REG = 0b10000000;
|
||||
const byte WRITE_TO_VRAM = 0b01000000;
|
||||
const byte READ_FROM_VRAM = 0b00000000;
|
||||
|
||||
#define POKE(a,b) (*((byte *)(a))=(byte)(b))
|
||||
#define PEEK(a) (*((byte *)(a)))
|
||||
|
||||
#define NOP asm { nop }
|
||||
|
||||
#define TMS_WRITE_REG(a) (*VDP_REG=(byte)(a));
|
||||
#define TMS_WRITE_DATA(a) (*VDP_DATA=(byte)(a));
|
||||
#define TMS_READ_DATA (*VDP_DATA);
|
||||
|
||||
// puts a character on the apple1 screen using the WOZMON routine
|
||||
void fastcall woz_putc(byte c) {
|
||||
asm("jsr %w", ECHO);
|
||||
void woz_putc(byte c) {
|
||||
asm {
|
||||
lda c
|
||||
jsr ECHO
|
||||
}
|
||||
}
|
||||
|
||||
// returns to WOZMON prompt
|
||||
void woz_mon() {
|
||||
#ifdef APPLE1
|
||||
asm("jmp %w", WOZMON);
|
||||
asm {
|
||||
jmp WOZMON
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
// sets the VRAM address on the TMS9918
|
||||
void fastcall set_vram_addr(word addr) {
|
||||
asm("sta %w", VDP_REG); // write address low byte
|
||||
// nops here ?
|
||||
asm("txa"); // X = addres high byte
|
||||
asm("and #%b", 0b00111111); // mask address high byte
|
||||
asm("ora #%b", WRITE_TO_VRAM); // set "write to vram" flag bits "01" upper bits ("00" for read)
|
||||
asm("sta %w", VDP_REG); // write flags and address high byte
|
||||
// nops here ?
|
||||
// reads a key from the apple-1 keyboard
|
||||
byte woz_getkey() {
|
||||
#ifdef APPLE1
|
||||
while((unsigned byte)PEEK(KEY_CTRL)>0);
|
||||
return PEEK(KEY_DATA) & 0x7f;
|
||||
#else
|
||||
byte key;
|
||||
byte const *keyptr = &key;
|
||||
kickasm(uses keyptr, uses GETIN) {{
|
||||
__wait:
|
||||
jsr GETIN
|
||||
cmp #0
|
||||
beq __wait
|
||||
sta keyptr
|
||||
}}
|
||||
return key;
|
||||
#endif
|
||||
}
|
||||
|
||||
// sets the VRAM address on the TMS9918
|
||||
void fastcall set_vram_read_addr(word addr) {
|
||||
asm("sta %w", VDP_REG); // write address low byte
|
||||
// nops here ?
|
||||
asm("txa"); // X = addres high byte
|
||||
asm("and #%b", 0b00111111); // mask address high byte
|
||||
asm("ora #%b", READ_FROM_VRAM); // set "write to vram" flag bits "01" upper bits ("00" for read)
|
||||
asm("sta %w", VDP_REG); // write flags and address high byte
|
||||
// nops here ?
|
||||
// sets the VRAM write address on the TMS9918
|
||||
void set_vram_write_addr(word addr) {
|
||||
TMS_WRITE_REG(<addr);
|
||||
TMS_WRITE_REG((>addr & 0b00111111)|WRITE_TO_VRAM);
|
||||
}
|
||||
|
||||
// sets the VRAM read address on the TMS9918
|
||||
void set_vram_read_addr(word addr) {
|
||||
TMS_WRITE_REG(<addr);
|
||||
TMS_WRITE_REG((>addr & 0b00111111)|READ_FROM_VRAM);
|
||||
}
|
||||
|
||||
// writes a value to a TMS9918 register (0-7)
|
||||
void write_reg(byte regnum, byte val) {
|
||||
// nops are not required
|
||||
POKE(VDP_REG, val);
|
||||
POKE(VDP_REG, (regnum & 0b00001111)|WRITE_TO_REG);
|
||||
TMS_WRITE_REG(val);
|
||||
TMS_WRITE_REG((regnum & 0b00001111)|WRITE_TO_REG);
|
||||
}
|
||||
|
||||
static word tms_cursor;
|
||||
word screen1_cursor;
|
||||
|
||||
#include "laser500_font.ascii.c"
|
||||
#include "screen1.c"
|
||||
#include "screen2.c"
|
||||
|
||||
// SCREEN 1 VALUES
|
||||
|
||||
// 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 word SCREEN1_PATTERN_TABLE = 0x0800;
|
||||
const word SCREEN1_NAME_TABLE = 0x1400;
|
||||
const word SCREEN1_COLOR_TABLE = 0x2000;
|
||||
const word SCREEN1_SPRITE_PATTERNS = 0x0000;
|
||||
const word SCREEN1_SPRITE_ATTRS = 0x1000;
|
||||
const word SCREEN1_SIZE = (32*24);
|
||||
|
||||
byte SCREEN1_TABLE[8] = {
|
||||
0x00, 0xc0, 0x05, 0x80, 0x01, 0x20, 0x00, 0x25
|
||||
};
|
||||
|
||||
// loads the Laser 500 font on the pattern table
|
||||
void SCREEN1_LOAD_FONT() {
|
||||
|
||||
static byte *source = FONT;
|
||||
static word i;
|
||||
|
||||
// start writing into VRAM from space character (32..127)
|
||||
set_vram_write_addr(SCREEN1_PATTERN_TABLE+(32*8));
|
||||
for(i=768;i!=0;i--) {
|
||||
TMS_WRITE_DATA(*source++);
|
||||
}
|
||||
|
||||
// reverse font (32..127)
|
||||
source = FONT;
|
||||
set_vram_write_addr(SCREEN1_PATTERN_TABLE+((128+32)*8));
|
||||
for(i=768;i!=0;i--) {
|
||||
TMS_WRITE_DATA(~(*source++));
|
||||
}
|
||||
}
|
||||
|
||||
// prints character to TMS (SCREEN 1 MODE)
|
||||
void SCREEN1_PUTCHAR(byte c) {
|
||||
set_vram_write_addr(screen1_cursor++);
|
||||
TMS_WRITE_DATA(c);
|
||||
}
|
||||
|
||||
// prints 0 terminated string pointed by YA
|
||||
void SCREEN1_PUTS(byte *s) {
|
||||
byte c;
|
||||
while(c=*s++) {
|
||||
SCREEN1_PUTCHAR(c);
|
||||
}
|
||||
}
|
||||
|
||||
void SCREEN1_HOME() {
|
||||
screen1_cursor = SCREEN1_NAME_TABLE;
|
||||
}
|
||||
|
||||
void SCREEN1_LOCATEXY(byte x, byte y) {
|
||||
screen1_cursor = SCREEN1_NAME_TABLE + ((word)y)*32 + x;
|
||||
}
|
||||
|
||||
void SCREEN1_FILL() {
|
||||
// fills name table with spaces (32)
|
||||
set_vram_write_addr(SCREEN1_NAME_TABLE);
|
||||
for(word i=SCREEN1_SIZE;i!=0;i--) {
|
||||
TMS_WRITE_DATA(32);
|
||||
}
|
||||
|
||||
// fill pattern table with 0
|
||||
set_vram_write_addr(SCREEN1_PATTERN_TABLE);
|
||||
for(word i=256*8;i!=0;i--) {
|
||||
TMS_WRITE_DATA(0);
|
||||
}
|
||||
|
||||
// fill color table with $1F
|
||||
set_vram_write_addr(SCREEN1_COLOR_TABLE);
|
||||
for(byte i=32;i!=0;i--) {
|
||||
TMS_WRITE_DATA(0x1f);
|
||||
}
|
||||
}
|
||||
|
||||
// SCREEN 2 VALUES
|
||||
|
||||
// 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 word SCREEN2_PATTERN_TABLE = 0x0000;
|
||||
const word SCREEN2_NAME_TABLE = 0x3800;
|
||||
const word SCREEN2_COLOR_TABLE = 0x2000;
|
||||
const word SCREEN2_SPRITE_PATTERNS = 0x1800;
|
||||
const word SCREEN2_SPRITE_ATTRS = 0x3b00;
|
||||
const word SCREEN2_SIZE = (32*24);
|
||||
|
||||
byte SCREEN2_TABLE[8] = {
|
||||
0x02, 0xc0, 0x0e, 0xff, 0x03, 0x76, 0x03, 0x25
|
||||
};
|
||||
|
||||
void SCREEN_INIT(byte *table) {
|
||||
for(byte i=0;i<8;i++) {
|
||||
write_reg(i, table[i]);
|
||||
}
|
||||
}
|
||||
|
||||
void SCREEN2_FILL() {
|
||||
// fills name table x3 with increasing numbers
|
||||
set_vram_write_addr(SCREEN2_NAME_TABLE);
|
||||
for(word i=0;i<SCREEN2_SIZE;i++) {
|
||||
TMS_WRITE_DATA(i & 0xFF);
|
||||
}
|
||||
|
||||
// fill pattern table with 0 (clear screen)
|
||||
set_vram_write_addr(SCREEN2_PATTERN_TABLE);
|
||||
for(word i=768*8;i!=0;i--) {
|
||||
TMS_WRITE_DATA(0);
|
||||
}
|
||||
|
||||
// fill color table with $1F
|
||||
set_vram_write_addr(SCREEN2_COLOR_TABLE);
|
||||
for(word i=768*8;i!=0;i--) {
|
||||
TMS_WRITE_DATA(0x1f);
|
||||
}
|
||||
}
|
||||
|
||||
void SCREEN2_PUTC(byte ch, byte x, byte y, byte col) {
|
||||
byte *source = &FONT[(word)(ch-32)*8];
|
||||
word addr = x*8 + y*256;
|
||||
set_vram_write_addr(SCREEN2_PATTERN_TABLE + addr); for(byte i=0;i<8;i++) TMS_WRITE_DATA(source[i]);
|
||||
set_vram_write_addr(SCREEN2_COLOR_TABLE + addr); for(byte i=0;i<8;i++) TMS_WRITE_DATA(col);
|
||||
}
|
||||
|
||||
void SCREEN2_PUTS(byte x, byte y, byte col, char *s) {
|
||||
byte c;
|
||||
while(c=*s++) {
|
||||
SCREEN2_PUTC(c, x++, y, col);
|
||||
}
|
||||
}
|
||||
|
||||
void SCREEN2_PSET(byte x, byte y) {
|
||||
static byte pow2_table[8] = { 128,64,32,16,8,4,2,1 };
|
||||
word paddr = SCREEN2_PATTERN_TABLE + (word)(x & 0b11111000) + (word)(y & 0b11111000)*32 + y%8;
|
||||
set_vram_read_addr(paddr);
|
||||
byte data = TMS_READ_DATA;
|
||||
set_vram_write_addr(paddr);
|
||||
TMS_WRITE_DATA(data|pow2_table[x%8]);
|
||||
}
|
||||
|
||||
void screen1_square_sprites() {
|
||||
static byte i;
|
||||
|
||||
// fills first sprite pattern with 255
|
||||
set_vram_addr(SCREEN1_SPRITE_PATTERNS); // start writing in the sprite patterns
|
||||
for(i=0;i<8;i++) {
|
||||
POKE(VDP_DATA, 255);
|
||||
set_vram_write_addr(SCREEN1_SPRITE_PATTERNS); // start writing in the sprite patterns
|
||||
for(byte i=0;i<8;i++) {
|
||||
TMS_WRITE_DATA(255);
|
||||
}
|
||||
|
||||
// set sprite coordinates
|
||||
set_vram_addr(SCREEN1_SPRITE_ATTRS); // start writing in the sprite attribute
|
||||
for(i=0;i<32;i++) {
|
||||
POKE(VDP_DATA,(6+i)*8); // y coordinate
|
||||
POKE(VDP_DATA,(6+i)*8); // x coordinate
|
||||
POKE(VDP_DATA,0); // name
|
||||
POKE(VDP_DATA,i); // color
|
||||
set_vram_write_addr(SCREEN1_SPRITE_ATTRS); // start writing in the sprite attribute
|
||||
for(byte i=0;i<32;i++) {
|
||||
TMS_WRITE_DATA((6+i)*8); // y coordinate
|
||||
TMS_WRITE_DATA((6+i)*8); // x coordinate
|
||||
TMS_WRITE_DATA(0); // name
|
||||
TMS_WRITE_DATA(i); // color
|
||||
// TODO: nops here
|
||||
}
|
||||
}
|
||||
|
||||
void screen2_square_sprites() {
|
||||
static byte i;
|
||||
|
||||
// fills first sprite pattern with 255
|
||||
set_vram_addr(SCREEN2_SPRITE_PATTERNS); // start writing in the sprite patterns
|
||||
for(i=0;i<8;i++) {
|
||||
POKE(VDP_DATA, 0);
|
||||
set_vram_write_addr(SCREEN2_SPRITE_PATTERNS); // start writing in the sprite patterns
|
||||
for(byte i=0;i<8;i++) {
|
||||
TMS_WRITE_DATA(0);
|
||||
}
|
||||
|
||||
// set sprite coordinates
|
||||
set_vram_addr(SCREEN2_SPRITE_ATTRS); // start writing in the sprite attribute
|
||||
for(i=0;i<32;i++) {
|
||||
POKE(VDP_DATA,0); // y coordinate
|
||||
POKE(VDP_DATA,0); // x coordinate
|
||||
POKE(VDP_DATA,0); // name
|
||||
POKE(VDP_DATA,i); // color
|
||||
set_vram_write_addr(SCREEN2_SPRITE_ATTRS); // start writing in the sprite attribute
|
||||
for(byte i=0;i<32;i++) {
|
||||
TMS_WRITE_DATA(0); // y coordinate
|
||||
TMS_WRITE_DATA(0); // x coordinate
|
||||
TMS_WRITE_DATA(0); // name
|
||||
TMS_WRITE_DATA(i); // color
|
||||
// TODO: nops here
|
||||
}
|
||||
}
|
||||
|
||||
void prova_screen1() {
|
||||
SCREEN_INIT(SCREEN1_TABLE);
|
||||
SCREEN1_FILL();
|
||||
SCREEN1_LOAD_FONT();
|
||||
|
||||
SCREEN1_HOME(); SCREEN1_PUTS("*** P-LAB VIDEO CARD SYSTEM ***");
|
||||
SCREEN1_LOCATEXY(0, 2); SCREEN1_PUTS("16K VRAM BYTES FREE");
|
||||
SCREEN1_LOCATEXY(0, 4); SCREEN1_PUTS("READY.");
|
||||
|
||||
SCREEN1_LOCATEXY(0, 10);
|
||||
for(word i=0;i<256;i++) SCREEN1_PUTCHAR((byte)i);
|
||||
|
||||
screen1_square_sprites();
|
||||
}
|
||||
|
||||
void prova_screen2() {
|
||||
SCREEN_INIT(SCREEN2_TABLE);
|
||||
SCREEN2_FILL();
|
||||
screen2_square_sprites();
|
||||
|
||||
SCREEN2_PUTS(0,0,0x1F,"*** P-LAB VIDEO CARD SYSTEM ***");
|
||||
SCREEN2_PUTS(0,2,0x1F,"16K VRAM BYTES FREE");
|
||||
SCREEN2_PUTS(0,4,0x1F,"READY.");
|
||||
|
||||
for(byte i=0;i<16;i++) {
|
||||
SCREEN2_PUTS(5,(byte)(6+i),(byte)(((15-i)<<4)+i)," SCREEN 2 ");
|
||||
}
|
||||
|
||||
for(byte i=0;i<192;i++) {
|
||||
SCREEN2_PSET((byte)i ,(byte)i/2);
|
||||
SCREEN2_PSET((byte)i ,(byte)i);
|
||||
SCREEN2_PSET((byte)i/2,(byte)i);
|
||||
}
|
||||
}
|
||||
|
||||
void main() {
|
||||
word i;
|
||||
byte key = '1';
|
||||
for(;;) {
|
||||
if(key == '1') prova_screen1();
|
||||
else if(key == '2') prova_screen2();
|
||||
else if(key == 0x0d) break;
|
||||
else woz_putc(key);
|
||||
|
||||
if(0) {
|
||||
SCREEN1_INIT();
|
||||
SCREEN1_FILL();
|
||||
SCREEN1_LOAD_FONT();
|
||||
|
||||
SCREEN1_HOME(); SCREEN1_PUTS("*** P-LAB VIDEO CARD SYSTEM ***");
|
||||
SCREEN1_LOCATEXY(0, 2); SCREEN1_PUTS("16K VRAM BYTES FREE");
|
||||
SCREEN1_LOCATEXY(0, 4); SCREEN1_PUTS("READY.");
|
||||
|
||||
SCREEN1_LOCATEXY(0, 10);
|
||||
for(i=0;i<256;i++) SCREEN1_PUTCHAR(i);
|
||||
|
||||
screen1_square_sprites();
|
||||
key = woz_getkey();
|
||||
}
|
||||
|
||||
if(1) {
|
||||
SCREEN2_INIT();
|
||||
SCREEN2_FILL();
|
||||
screen2_square_sprites();
|
||||
//SCREEN2_PUTC(65,1,1,0x1F);
|
||||
|
||||
SCREEN2_PUTS(0,0,0x1F,"*** P-LAB VIDEO CARD SYSTEM ***");
|
||||
SCREEN2_PUTS(0,2,0x1F,"16K VRAM BYTES FREE");
|
||||
SCREEN2_PUTS(0,4,0x1F,"READY.");
|
||||
|
||||
for(i=0;i<16;i++) {
|
||||
SCREEN2_PUTS(5,6+i,((15-i)<<4)+i," COLOR ");
|
||||
}
|
||||
|
||||
for(i=0;i<192;i++) {
|
||||
SCREEN2_PSET(i,i/2);
|
||||
SCREEN2_PSET(i,i);
|
||||
SCREEN2_PSET(i/2,i);
|
||||
}
|
||||
}
|
||||
|
||||
woz_putc(42);
|
||||
woz_mon();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,854 @@
|
|||
// TODO verificare NOPs
|
||||
// Generic ASM 6502
|
||||
.file [name="test.prg", type="prg", segments="Program"]
|
||||
.segmentdef Program [segments="Code, Data"]
|
||||
.segmentdef Code [start=$4000]
|
||||
.segmentdef Data [startAfter="Code"]
|
||||
.const WOZMON = $ff1f
|
||||
// enters monitor
|
||||
.const ECHO = $ffef
|
||||
// print hex byte in A (A destroyed)
|
||||
.const KEY_DATA = $d010
|
||||
// read key
|
||||
.const KEY_CTRL = $d011
|
||||
// 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
|
||||
// control port
|
||||
.label VDP_DATA = $c000
|
||||
// TMS9918 data port (VRAM)
|
||||
.label VDP_REG = $c001
|
||||
.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
|
||||
jsr woz_mon
|
||||
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: {
|
||||
__b1:
|
||||
lda KEY_CTRL
|
||||
cmp #0
|
||||
bne __b1
|
||||
lda #$7f
|
||||
and KEY_DATA
|
||||
rts
|
||||
}
|
||||
// returns to WOZMON prompt
|
||||
woz_mon: {
|
||||
jmp WOZMON
|
||||
}
|
||||
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($14) table)
|
||||
SCREEN_INIT: {
|
||||
.label table = $14
|
||||
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 = $14
|
||||
.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($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
|
||||
|
|
@ -0,0 +1,853 @@
|
|||
// 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