astrocade: use aclib.s not aclib.c, rainbow, rotate; use AstroLibre

Makefile

@@ -29,3 +29,6 @@ tsweb:
 	ifconfig | grep inet
 	$(TSC) -w &
 	python3 scripts/serveit.py 2>> http.out
+
+astrolibre.b64.txt: astrolibre.rom
+	lzg -9 $< | base64 -w 0 > $@

presets/astrocade-bios/bios.c

@@ -149,7 +149,7 @@ void DECCTS(ContextBlock *ctx) {
 // INTERPRETER
 
 void INTPC(ContextBlock *ctx) {
-  while (ctx->params[0] != 2) { // 2 = exit
+  while (ctx->params[0] > 2) { // 0,2 = exit
     SYSCALL(ctx);
   }
   ctx->params++; // skip EXIT opcode
@@ -303,6 +303,25 @@ void RANGED(ContextBlock *ctx) {
   }
 }
 
+void INDEXB(ContextBlock *ctx) {
+  word addr = _HL + _A;
+  _HL = addr;
+  _A = *((byte*)addr);
+}
+
+void INDEXW(ContextBlock *ctx) {
+  word addr = _HL + _A*2;
+  _HL = addr;
+  _DE = *((word*)addr);
+}
+
+void INDEXN(ContextBlock *ctx) {
+  byte ofs = _C;
+  word addr = _HL + ofs/2;
+  byte val = *((byte*)addr);
+  _A = (ofs & 1) ? (val>>4) : (val&0xf);
+}
+
 // input
 
 extern const byte KCTASC_TABLE[25];
@@ -394,11 +413,11 @@ const SysCallEntry SYSCALL_TABLE[64] = {
   { &PAWS,	REG_B },
   { &NOOP,	REG_E|REG_D|REG_C },	// DISTIM
   { &NOOP,	REG_HL },	// INCSCR
-  { &NOOP,	REG_C|REG_HL },	// INDEXN
+  { &INDEXN,	REG_C|REG_HL },	// INDEXN
   { &NOOP,	REG_HL },	// STOREN
   /* 90 */
-  { &NOOP,	REG_A|REG_HL },	// INDEXW
-  { &NOOP,	REG_A|REG_HL },	// INDEXB
+  { &INDEXW,	REG_A|REG_HL },	// INDEXW
+  { &INDEXB,	REG_A|REG_HL },	// INDEXB
   { &MOVE,	REG_DE|REG_BC|REG_HL },
   { &NOOP,	0 },	// SHIFTU
   { &BCDADD,	REG_DE|REG_B|REG_HL },

presets/astrocade-bios/gfx.c

@@ -6,17 +6,24 @@
 #define LOCHAR 0x20
 #define HICHAR 0x63
 
+const byte LMASK[4] = {0xff, 0x3f, 0x0f, 0x03};
+
 static void hline(byte x1, byte x2, byte y, byte pattern) {
   byte xb1 = x1/4;
   byte xb2 = x2/4;
-  byte* dest = &vmagic[y][xb1];
-  signed char nbytes = xb2 - xb1;
-  hw_magic = M_SHIFT(x1) | M_XOR;
-  while (--nbytes > 0) {
-    *dest++ = pattern;
+  byte* dest = &vidmem[y][xb1];
+  byte mask = LMASK[x1&3];
+  if (xb1 == xb2) {
+    mask &= ~LMASK[x2&3];
+  }
+  *dest = *dest & ~mask | (mask & pattern);
+  if (xb1 != xb2) {
+    dest++;
+    while (++xb1 < xb2) {
+      *dest++ = pattern;
+    }
+    *dest = *dest & LMASK[x2&3] | (~LMASK[x2&3] & pattern);
   }
-  if (x2&3) *dest = 0;
-  // TODO
 }
 
 // Fill rect (E,D,C,B) color A
@@ -181,11 +188,11 @@ void DISNUM(ContextBlock *ctx) {
 
 // write pattern (E,D,C,B) magic A @ HL
 void WRIT(ContextBlock *ctx) {
-  byte magic = _A;
   byte w = _C;
   byte h = _B;
   byte x = _E;
   byte y = _D;
+  byte magic = _A | (x & 3);	// add X shift
   byte* src = (byte*) _HL;
   byte* dest = &vmagic[y][0]; // destination address
   byte xb = (magic & M_FLOP) ? (39-(x>>2)) : (x>>2);

presets/astrocade-bios/test1.s

@@ -58,7 +58,13 @@ _main:
         .db	72
         .db	100
         .db	4
-        .db	0xa5
+        .db	0xaa
+        DO	RECTAN
+        .db	6
+        .db	74
+        .db	100
+        .db	4
+        .db	0x55
         DO	WRITR
         .db	50
         .db	80

presets/astrocade/acfast.s

@@ -1,13 +1,16 @@
 
-
+; FAST SPRITE ROUTINES FOR ASTROCADE
+; fast_sprite_8: 8 (2 bytes) by H pixels, unexpanded
+; fast_sprite_16: 16 (4 bytes) by H pixels, unexpanded
+; Pattern format: bytewidth height data...
 .area	_CODE_ACFAST
 
 ;void fast_sprite_8(const byte* src, byte* dst) {
 .globl	_fast_sprite_8
 _fast_sprite_8:
   push	ix
   ld	ix,#0
-  add	ix,sp
+  add	ix,sp		; IX = arg pointer
   ld	l,4(ix)		; src (HL)
   ld	h,5(ix)
   ld	e,6(ix)		; dst (DE)
@@ -16,7 +19,7 @@ _fast_sprite_8:
   ld	c,(hl)		; load height -> C
   sla	c		; C *= 2
   ld	b,#0		; B always 0 (BC < 256)
-  inc	hl		; move to pattern bytes
+  inc	hl		; move HL to pattern start
 001$:
   ldi
   ldi			; copy 2 bytes src to dst
@@ -32,3 +35,37 @@ _fast_sprite_8:
 002$:
   pop	ix
   ret
+
+;void fast_sprite_16(const byte* src, byte* dst) {
+.globl	_fast_sprite_16
+_fast_sprite_16:
+  push	ix
+  ld	ix,#0
+  add	ix,sp		; IX = arg pointer
+  ld	l,4(ix)		; src (HL)
+  ld	h,5(ix)
+  ld	e,6(ix)		; dst (DE)
+  ld	d,7(ix)
+  inc	hl		; skip width
+  ld	c,(hl)		; load height -> C
+  sla	c
+  sla	c		; C *= 4
+  ld	b,#0		; B always 0 (BC < 256)
+  inc	hl		; move HL to pattern start
+001$:
+  ldi
+  ldi
+  ldi
+  ldi			; copy 4 bytes src to dst
+  ld	a,b		; 0 -> A, doesnt affect flags
+  ld	(de),a		; copy 3rd 0 (for shifts)
+  jp	po,002$		; exit if BC == 0
+  ld	a,e		; E -> A
+  add	a,#36		; next scanline (dest += 38)
+  ld	e,a		; A -> E
+  jr	nc,001$		; loop unless lo byte overflow
+  inc	d		; inc hi byte of dest. addr
+  jr    001$		; loop to next line
+002$:
+  pop	ix
+  ret

presets/astrocade/aclib.h

@@ -78,4 +78,10 @@ byte __at (0x4000) vidmem[VTOTAL][VBWIDTH];
 void set_palette(byte palette[8]) __z88dk_fastcall; // palette in reverse order
 void set_sound_registers(byte regs[8]) __z88dk_fastcall; // in reverse too
 
+// INTERRUPTS
+
+typedef void (*t_interrupt_handler)(void) __interrupt;
+
+void set_interrupt_vector(t_interrupt_handler*ih) __z88dk_fastcall;
+
 #endif

presets/astrocade/aclib.s

@@ -0,0 +1,37 @@
+
+	.include "astrocade.inc"
+
+;;; C functions
+
+	.area	_CODE_ACLIB
+
+; set entire palette at once (8 bytes to port 0xb)
+; bytes in array should be in reverse
+;void set_palette(byte palette[8]) __z88dk_fastcall {
+.globl	_set_palette
+_set_palette:
+  ld bc,#0x80b	; B -> 8, C -> 0xb
+  otir		; write C bytes from HL to port[B]
+  ret
+
+; set entire sound registers at once (8 bytes to port 0x18)
+; bytes in array should be in reverse
+;void set_sound_registers(byte regs[8]) __z88dk_fastcall {
+.globl	_set_sound_registers
+_set_sound_registers:
+  ld bc,#0x818	; B -> 8, C -> 0x18
+  otir		; write C bytes from HL to port[B]
+  ret
+
+; set interrupt vector
+; pass address of 16-bit pointer to routine
+.globl	_set_interrupt_vector
+_set_interrupt_vector:
+  di
+  ld	a,l
+  out	(INFBK),a
+  ld	a,h	; upper 8 bits of address
+  ld	i,a	; -> I
+  im	2	; mode 2
+  ei		; enable interrupts
+  ret

presets/astrocade/cosmic.c

@@ -11,7 +11,7 @@
 #include "acbios.h"
 //#link "acbios.s"
 #include "aclib.h"
-//#link "aclib.c"
+//#link "aclib.s"
 #include "acextra.h"
 //#link "acextra.c"
 //#link "hdr_autostart.s"

presets/astrocade/fastsprites.c

@@ -1,7 +1,7 @@
 
 //#resource "astrocade.inc"
 #include "aclib.h"
-//#link "aclib.c"
+//#link "aclib.s"
 #include "acbios.h"
 //#link "acbios.s"
 //#link "acfast.s"
@@ -26,6 +26,7 @@ const byte SPRITE[] = {
 };
 
 extern void fast_sprite_8(const byte* pattern, byte* dst);
+extern void fast_sprite_16(const byte* pattern, byte* dst);
 
 #define MAX_SPRITES 8
 
@@ -69,7 +70,7 @@ void main(void) {
   // fill array
   for (i=0; i<MAX_SPRITES; i++) {
     actors[i].x = rand() & 0x7f;
-    actors[i].y = (i*4);
+    actors[i].y = (i*8) & 0x3f;
     actors[i].pattern = SPRITE;
     draw_actor(&actors[i]);
   }

presets/astrocade/hello.c

@@ -1,7 +1,7 @@
 
 //#resource "astrocade.inc"
 #include "aclib.h"
-//#link "aclib.c"
+//#link "aclib.s"
 //#link "hdr_autostart.s"
 #include "acbios.h"
 //#link "acbios.s"
@@ -28,11 +28,22 @@ const byte BALL[] = {
 };
 
 // BCD number
-byte bcdnum[3] = {0x56,0x34,0x12};
+byte bcdnum[3] = {0x96,0x99,0x09};
 const byte bcdinc[3] = {0x01,0x00,0x00};
 
-void _clear() {
-}
+byte music_stack[16];
+const byte MUSICDATA[] = {
+ 0x80,
+ 0x20,0xB0,0xCC,0x0F,0x0C,0x7E,0x00,0x00,
+ 0x0C,0x7E,0x00,0x00,0x24,0x5E,0x7E,0x96,
+ 0x0C,0x54,0x64,0x7E,0x0E,0x4A,0x5E,0x7E,
+ 0x10,0x46,0x54,0x7E,0x48,0x3E,0x4A,0x5E,
+ 0x0E,0x5E,0x8D,0x70,0x10,0x54,0x8D,0x70,
+ 0x36,0x4A,0x5E,0x70,0x12,0x46,0x54,0x7E,
+ 0x24,0x54,0x64,0x7E,0x48,0x5E,0x96,0x7E,
+ 0xE0,0x80,0x18,0x90,0xFD,0xB0,0xFF,0x1F,
+ 0xF0,
+};
 
 void main(void) {
   // setup palette
@@ -70,6 +81,8 @@ void main(void) {
   activate_interrupts();
   // make sure screen doesn't black out
   RESET_TIMEOUT();
+  // play music
+  //begin_music(music_stack, 0b11111100, MUSICDATA);
   while (1) {
     // wait for SENTRY result
     word code;

presets/astrocade/lines.c

@@ -1,6 +1,7 @@
 
+//#resource "astrocade.inc"
 #include "aclib.h"
-//#link "aclib.c"
+//#link "aclib.s"
 #include "acbios.h"
 #include "acextra.h"
 //#link "acextra.c"

presets/astrocade/music.c

@@ -4,7 +4,7 @@
 
 //#resource "astrocade.inc"
 #include "aclib.h"
-//#link "aclib.c"
+//#link "aclib.s"
 //#link "hdr_autostart.s"
 #include "acbios.h"
 //#link "acbios.s"
@@ -87,7 +87,6 @@ void init_sound() {
 }
 
 void main() {
-  clrscr();
   init_sound();
   activate_interrupts();
   while (1) {