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SekRunPS Cyclone integration

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@68 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-03-14 17:59:53 +00:00
parent 8b71d0ebf9
commit 7336a99a49
12 changed files with 278 additions and 47 deletions
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55
Pico/cd/Pico.c
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@ -83,44 +83,55 @@ static __inline void SekRunS68k(int cyc)
#endif
}
#define PS_STEP_M68K 8
#define PS_STEP_S68K 13
#define PS_STEP_M68K ((488<<16)/20) // ~24
//#define PS_STEP_S68K 13
#ifndef _ASM_CD_PICO_C
static __inline void SekRunPS(int cyc_m68k, int cyc_s68k)
{
int cyc_do_m68k, cyc_do_s68k, it=0;
int cyc_done_m68k=0, cyc_done_s68k=0;
int cycn, cycn_s68k, cyc_do;
int d_cm = 0, d_cs = 0, ex;
SekCycleAim+=cyc_m68k;
SekCycleAimS68k+=cyc_s68k;
cyc_do_m68k=SekCycleAim-SekCycleCnt;
cyc_do_s68k=SekCycleAimS68k-SekCycleCntS68k;
while (cyc_done_m68k < cyc_do_m68k || cyc_done_s68k < cyc_do_s68k) {
it++;
if (cyc_done_m68k < cyc_do_m68k && it*PS_STEP_M68K > cyc_done_m68k) {
// fprintf(stderr, "=== start %3i/%3i [%3i/%3i] {%05i.%i} ===\n", cyc_m68k, cyc_s68k,
// SekCycleAim-SekCycleCnt, SekCycleAimS68k-SekCycleCntS68k, Pico.m.frame_count, Pico.m.scanline);
/* loop 488 downto 0 in steps of PS_STEP */
for (cycn = (488<<16)-PS_STEP_M68K; cycn >= 0; cycn -= PS_STEP_M68K)
{
ex = 0;
cycn_s68k = (cycn + cycn/2 + cycn/8) >> 16;
//fprintf(stderr, "%3i/%3i: ", cycn>>16, cycn_s68k);
if ((cyc_do = SekCycleAim-SekCycleCnt-(cycn>>16)) > 0) {
#if defined(EMU_C68K)
PicoCpu.cycles = PS_STEP_M68K;
PicoCpu.cycles = cyc_do;
CycloneRun(&PicoCpu);
cyc_done_m68k += PS_STEP_M68K - PicoCpu.cycles;
SekCycleCnt += cyc_do - PicoCpu.cycles;
#elif defined(EMU_M68K)
m68k_set_context(&PicoM68kCPU);
cyc_done_m68k += m68k_execute(PS_STEP_M68K);
SekCycleCnt += (ex = m68k_execute(cyc_do));
#endif
} //else dprintf("m68k skipping it #%i", it);
if (cyc_done_s68k < cyc_do_s68k && it*PS_STEP_S68K > cyc_done_s68k) {
}
//fprintf(stderr, "%3i ", ex); d_cm += ex; ex = 0;
if ((cyc_do = SekCycleAimS68k-SekCycleCntS68k-cycn_s68k) > 0) {
#if defined(EMU_C68K)
PicoCpuS68k.cycles = PS_STEP_S68K;
PicoCpuS68k.cycles = cyc_do;
CycloneRun(&PicoCpuS68k);
cyc_done_s68k += PS_STEP_S68K - PicoCpuS68k.cycles;
SekCycleCntS68k += cyc_do - PicoCpuS68k.cycles;
#elif defined(EMU_M68K)
m68k_set_context(&PicoS68kCPU);
cyc_done_s68k += m68k_execute(PS_STEP_S68K);
SekCycleCntS68k += (ex = m68k_execute(cyc_do));
#endif
} //else dprintf("s68k skipping it #%i", it);
}
//fprintf(stderr, "%3i\n", ex); d_cs += ex;
}
SekCycleCnt += cyc_done_m68k;
SekCycleCntS68k += cyc_done_s68k;
//dprintf("== end SekRunPS, it=%i ==", it);
//fprintf(stderr, "== end %3i/%3i ==\n", d_cm, d_cs);
}
#else
void SekRunPS(int cyc_m68k, int cyc_s68k);
#endif
static __inline void check_cd_dma(void)
@ -271,7 +282,7 @@ static int PicoFrameHintsMCD(void)
//dprintf("m68k starting exec @ %06x", SekPc);
if(Pico.m.dma_bytes) SekCycleCnt+=CheckDMA();
if((PicoOpt & 0x2000) && (Pico_mcd->m.busreq&3) == 1) {
SekRunPS(cycles_68k, cycles_s68k); // "perfect sync"
SekRunPS(cycles_68k, cycles_s68k); // "better/perfect sync"
} else {
SekRun(cycles_68k);
if ((Pico_mcd->m.busreq&3) == 1) // no busreq/no reset