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Sonic CD runs on GP2X

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@21 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-01-19 22:08:50 +00:00
parent d1df87866b
commit b837b69b3f
20 changed files with 364 additions and 184 deletions
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37
Pico/cd/Pico.c
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@ -33,7 +33,7 @@ int PicoResetMCD(int hard)
// clear everything except BIOS
memset(Pico_mcd->prg_ram, 0, sizeof(mcd_state) - sizeof(Pico_mcd->bios));
*(unsigned int *)(Pico_mcd->bios + 0x70) = 0xffffffff; // reset hint vector (simplest way to implement reg6)
PicoMCD |= 2; // s68k reset pending
PicoMCD |= 2; // s68k reset pending. TODO: move
Pico_mcd->s68k_regs[3] = 1; // 2M word RAM mode with m68k access after reset
counter75hz = 0;
@ -48,7 +48,11 @@ static __inline void SekRun(int cyc)
int cyc_do;
SekCycleAim+=cyc;
if((cyc_do=SekCycleAim-SekCycleCnt) < 0) return;
#if defined(EMU_M68K)
#if defined(EMU_C68K)
PicoCpu.cycles=cyc_do;
CycloneRun(&PicoCpu);
SekCycleCnt+=cyc_do-PicoCpu.cycles;
#elif defined(EMU_M68K)
m68k_set_context(&PicoM68kCPU);
SekCycleCnt+=m68k_execute(cyc_do);
#endif
@ -59,7 +63,11 @@ static __inline void SekRunS68k(int cyc)
int cyc_do;
SekCycleAimS68k+=cyc;
if((cyc_do=SekCycleAimS68k-SekCycleCntS68k) < 0) return;
#if defined(EMU_M68K)
#if defined(EMU_C68K)
PicoCpuS68k.cycles=cyc_do;
CycloneRun(&PicoCpuS68k);
SekCycleCntS68k+=cyc_do-PicoCpuS68k.cycles;
#elif defined(EMU_M68K)
m68k_set_context(&PicoS68kCPU);
SekCycleCntS68k+=m68k_execute(cyc_do);
#endif
@ -82,6 +90,27 @@ static __inline void check_cd_dma(void)
Update_CDC_TRansfer(ddx); // now go and do the actual transfer
}
// to be called on 224 or line_sample scanlines only
static __inline void getSamples(int y)
{
if(y == 224) {
//dprintf("sta%i: %i [%i]", (emustatus & 2), emustatus, y);
if(emustatus & 2)
sound_render(PsndLen/2, PsndLen-PsndLen/2);
else sound_render(0, PsndLen);
if (emustatus&1) emustatus|=2; else emustatus&=~2;
if (PicoWriteSound) PicoWriteSound();
// clear sound buffer
memset(PsndOut, 0, (PicoOpt & 8) ? (PsndLen<<2) : (PsndLen<<1));
}
else if(emustatus & 3) {
emustatus|= 2;
emustatus&=~1;
sound_render(0, PsndLen/2);
}
}
// Accurate but slower frame which does hints
static int PicoFrameHintsMCD(void)
@ -176,7 +205,7 @@ static int PicoFrameHintsMCD(void)
if(y == 32 && PsndOut)
emustatus &= ~1;
else if((y == 224 || y == line_sample) && PsndOut)
;//getSamples(y);
getSamples(y);
// Run scanline:
//dprintf("m68k starting exec @ %06x", SekPc);