#include "../PicoInt.h"
+#include "../sound/sn76496.h"
#ifndef UTYPES_DEFINED
typedef unsigned char u8;
#define UTYPES_DEFINED
#endif
+
// -----------------------------------------------------------------
// Read Rom and read Ram
a&=0xffffff;
- if ((a&0xffffe0)==0xc00000) { // VDP
- d=PicoVideoRead(a);
- if ((a&1)==0) d>>=8;
+ if ((a&0xfffff0)==0xc00000) { // VDP
+ d=PicoVideoRead8(a);
goto end;
}
{
switch (a & 0x1f)
{
+ case 0x01: d = PicoPicohw.r1; break;
case 0x03:
- d = PicoPad[0]&0x0f; // d-pad
- d |= (PicoPad[0]&0x20) >> 1; // red button -> C
- d |= (PicoPad[0]&0x40) << 1; // pen tap -> A
+ d = PicoPad[0]&0x1f; // d-pad
+ d |= (PicoPad[0]&0x20) << 2; // pen push -> C
d = ~d;
break;
- case 0x05: d = (PicoPicoPenPos[0] >> 8) & 3; break; // what is MS bit for? Games read it..
- case 0x07: d = PicoPicoPenPos[0] & 0xff; break;
- case 0x09: d = (PicoPicoPenPos[1] >> 8) & 3; break;
- case 0x0b: d = PicoPicoPenPos[1] & 0xff; break;
- case 0x0d: d = (1 << (PicoPicoPage & 7)) - 1;break;
- case 0x12: d = 0x80; break;
+ case 0x05: d = (PicoPicohw.pen_pos[0] >> 8); break; // what is MS bit for? Games read it..
+ case 0x07: d = PicoPicohw.pen_pos[0] & 0xff; break;
+ case 0x09: d = (PicoPicohw.pen_pos[1] >> 8); break;
+ case 0x0b: d = PicoPicohw.pen_pos[1] & 0xff; break;
+ case 0x0d: d = (1 << (PicoPicohw.page & 7)) - 1; break;
+ case 0x12: d = PicoPicohw.fifo_bytes == 0 ? 0x80 : 0; break; // guess
default:
elprintf(EL_UIO, "r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);
break;
}
}
-// elprintf(EL_UIO, "r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);
+ //elprintf(EL_UIO, "r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);
end:
elprintf(EL_IO, "r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);
if (a<Pico.romsize) { d = *(u16 *)(Pico.rom+a); goto end; } // Rom
- if ((a&0xffffe0)==0xc00000) {
+ if ((a&0xfffff0)==0xc00000) {
d = PicoVideoRead(a);
goto end;
}
- if (a == 0x800010) d = 0x0f;
+ if (a == 0x800010)
+ d = (PicoPicohw.fifo_bytes > 0x3f) ? 0 : (0x3f - PicoPicohw.fifo_bytes);
+ else if (a == 0x800012)
+ d = PicoPicohw.fifo_bytes == 0 ? 0x8000 : 0; // guess
+ else
+ elprintf(EL_UIO, "r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);
- elprintf(EL_UIO, "r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);
+ //elprintf(EL_UIO, "r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);
end:
elprintf(EL_IO, "r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);
if (a<Pico.romsize) { u16 *pm=(u16 *)(Pico.rom+a); d = (pm[0]<<16)|pm[1]; goto end; } // Rom
- if ((a&0xffffe0)==0xc00000) {
+ if ((a&0xfffff0)==0xc00000) {
d = (PicoVideoRead(a)<<16)|PicoVideoRead(a+2);
goto end;
}
// -----------------------------------------------------------------
// Write Ram
-
+/*
void dump(u16 w)
{
- FILE *f = fopen("dump.bin", "a");
- fwrite(&w, 1, 2, f);
- fclose(f);
+ static FILE *f[0x10] = { NULL, };
+ char fname[32];
+ int num = PicoPicohw.r12 & 0xf;
+
+ w = (w << 8) | (w >> 8);
+ sprintf(fname, "ldump%i.bin", num);
+ if (f[num] == NULL)
+ f[num] = fopen(fname, "wb");
+ fwrite(&w, 1, 2, f[num]);
+ //fclose(f);
}
-
+*/
static void PicoWritePico8(u32 a,u8 d)
{
if ((a&0xe00000)==0xe00000) { *(u8 *)(Pico.ram+((a^1)&0xffff))=d; return; } // Ram
a&=0xffffff;
- if ((a&0xffffe0)==0xc00000) { // VDP
+ if ((a&0xfffff9)==0xc00011) { if (PicoOpt&2) SN76496Write(d); return; } // PSG Sound
+
+ if ((a&0xfffff0)==0xc00000) { // VDP
d&=0xff;
PicoVideoWrite(a,(u16)(d|(d<<8))); // Byte access gets mirrored
return;
}
- elprintf(EL_UIO, "w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);
+ switch (a & 0x1f) {
+ case 0x19: case 0x1b: case 0x1d: case 0x1f: break; // 'S' 'E' 'G' 'A'
+ default:
+ elprintf(EL_UIO, "w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);
+ break;
+ }
+ //elprintf(EL_UIO, "w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);
}
static void PicoWritePico16(u32 a,u16 d)
if ((a&0xe00000)==0xe00000) { *(u16 *)(Pico.ram+(a&0xfffe))=d; return; } // Ram
a&=0xfffffe;
- if ((a&0xffffe0)==0xc00000) { PicoVideoWrite(a,(u16)d); return; } // VDP
+ if ((a&0xfffff0)==0xc00000) { PicoVideoWrite(a,(u16)d); return; } // VDP
+
+ //if (a == 0x800010) dump(d);
+ if (a == 0x800010)
+ {
+ PicoPicohw.fifo_bytes += 2;
-// if (a == 0x800010) dump(d);
+ if (PicoPicohw.xpcm_ptr < PicoPicohw.xpcm_buffer + XPCM_BUFFER_SIZE) {
+ *PicoPicohw.xpcm_ptr++ = d >> 8;
+ *PicoPicohw.xpcm_ptr++ = d;
+ }
+ else if (PicoPicohw.xpcm_ptr == PicoPicohw.xpcm_buffer + XPCM_BUFFER_SIZE) {
+ elprintf(EL_ANOMALY|EL_PICOHW, "xpcm_buffer overflow!");
+ PicoPicohw.xpcm_ptr++;
+ }
+ }
+ else if (a == 0x800012) {
+ int r12_old = PicoPicohw.r12;
+ PicoPicohw.r12 = d;
+ if (r12_old != d)
+ PicoReratePico();
+ }
+ else
+ elprintf(EL_UIO, "w16: %06x, %04x", a&0xffffff, d);
- elprintf(EL_UIO, "w16: %06x, %04x", a&0xffffff, d);
+ //elprintf(EL_UIO, "w16: %06x, %04x", a&0xffffff, d);
}
static void PicoWritePico32(u32 a,u32 d)
}
a&=0xfffffe;
- if ((a&0xffffe0)==0xc00000)
+ if ((a&0xfffff0)==0xc00000)
{
// VDP:
PicoVideoWrite(a, (u16)(d>>16));
pm68k_read_memory_pcr_16 = m68k_read_memory_pcrp_16;
pm68k_read_memory_pcr_32 = m68k_read_memory_pcrp_32;
#endif
+#ifdef EMU_F68K
+ // use standard setup, only override handlers
+ PicoMemSetup();
+ PicoCpuFM68k.read_byte =PicoReadPico8;
+ PicoCpuFM68k.read_word =PicoReadPico16;
+ PicoCpuFM68k.read_long =PicoReadPico32;
+ PicoCpuFM68k.write_byte=PicoWritePico8;
+ PicoCpuFM68k.write_word=PicoWritePico16;
+ PicoCpuFM68k.write_long=PicoWritePico32;
+#endif
}
notaz.gp2x.de / picodrive.git / blobdiff