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32x: improve 'simple' scheduling, works for 'interesting' games

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@798 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-10-01 10:21:43 +00:00
parent c987bb5c36
commit 236990cf77
4 changed files with 42 additions and 35 deletions
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50
pico/32x/32x.c
View file

@ -99,28 +99,20 @@ static void p32x_start_blank(void)
p32x_poll_event(3, 1);
}
// FIXME..
static __inline void SekRunM68k(int cyc)
static __inline void run_m68k(int cyc)
{
int cyc_do;
SekCycleAim += cyc;
if (Pico32x.emu_flags & P32XF_68KPOLL) {
SekCycleCnt = SekCycleAim;
SekCycleCnt += cyc;
return;
}
if ((cyc_do = SekCycleAim - SekCycleCnt) <= 0)
return;
#if defined(EMU_CORE_DEBUG)
// this means we do run-compare
SekCycleCnt+=CM_compareRun(cyc_do, 0);
#elif defined(EMU_C68K)
PicoCpuCM68k.cycles=cyc_do;
#if defined(EMU_C68K)
PicoCpuCM68k.cycles = cyc;
CycloneRun(&PicoCpuCM68k);
SekCycleCnt+=cyc_do-PicoCpuCM68k.cycles;
SekCycleCnt += cyc - PicoCpuCM68k.cycles;
#elif defined(EMU_M68K)
SekCycleCnt+=m68k_execute(cyc_do);
SekCycleCnt += m68k_execute(cyc);
#elif defined(EMU_F68K)
SekCycleCnt+=fm68k_emulate(cyc_do+1, 0, 0);
SekCycleCnt += fm68k_emulate(cyc+1, 0, 0);
#endif
}
@ -131,18 +123,28 @@ static __inline void SekRunM68k(int cyc)
#define PICO_32X
#define CPUS_RUN_SIMPLE(m68k_cycles,s68k_cycles) \
SekRunM68k(m68k_cycles); \
if (!(Pico32x.emu_flags & (P32XF_MSH2POLL|P32XF_MSH2VPOLL))) \
sh2_execute(&msh2, CYCLES_M68K2SH2(m68k_cycles)); \
if (!(Pico32x.emu_flags & (P32XF_SSH2POLL|P32XF_SSH2VPOLL))) \
sh2_execute(&ssh2, CYCLES_M68K2SH2(m68k_cycles))
{ \
int slice; \
SekCycleAim += m68k_cycles; \
while (SekCycleCnt < SekCycleAim) { \
slice = SekCycleCnt; \
run_m68k(SekCycleAim - SekCycleCnt); \
slice = SekCycleCnt - slice; /* real count from 68k */ \
if (SekCycleCnt < SekCycleAim) \
elprintf(EL_32X, "slice %d", slice); \
if (!(Pico32x.emu_flags & (P32XF_SSH2POLL|P32XF_SSH2VPOLL))) \
sh2_execute(&ssh2, CYCLES_M68K2SH2(slice)); \
if (!(Pico32x.emu_flags & (P32XF_MSH2POLL|P32XF_MSH2VPOLL))) \
sh2_execute(&msh2, CYCLES_M68K2SH2(slice)); \
} \
}
#define STEP_68K 24
#define CPUS_RUN_LOCKSTEP(m68k_cycles,s68k_cycles) \
{ \
int i; \
for (i = 0; i <= (m68k_cycles) - STEP_68K; i += STEP_68K) { \
SekRunM68k(STEP_68K); \
run_m68k(STEP_68K); \
if (!(Pico32x.emu_flags & (P32XF_MSH2POLL|P32XF_MSH2VPOLL))) \
sh2_execute(&msh2, CYCLES_M68K2SH2(STEP_68K)); \
if (!(Pico32x.emu_flags & (P32XF_SSH2POLL|P32XF_SSH2VPOLL))) \
@ -150,15 +152,15 @@ static __inline void SekRunM68k(int cyc)
} \
/* last step */ \
i = (m68k_cycles) - i; \
SekRunM68k(i); \
run_m68k(i); \
if (!(Pico32x.emu_flags & (P32XF_MSH2POLL|P32XF_MSH2VPOLL))) \
sh2_execute(&msh2, CYCLES_M68K2SH2(i)); \
if (!(Pico32x.emu_flags & (P32XF_SSH2POLL|P32XF_SSH2VPOLL))) \
sh2_execute(&ssh2, CYCLES_M68K2SH2(i)); \
}
//#define CPUS_RUN CPUS_RUN_SIMPLE
#define CPUS_RUN CPUS_RUN_LOCKSTEP
#define CPUS_RUN CPUS_RUN_SIMPLE
//#define CPUS_RUN CPUS_RUN_LOCKSTEP
#include "../pico_cmn.c"

20
pico/32x/memory.c
View file

@ -1,7 +1,7 @@
#include "../pico_int.h"
#include "../memory.h"
#if 1
#if 0
#undef ash2_end_run
#undef SekEndRun
#define ash2_end_run(x)
@ -159,7 +159,7 @@ static u32 p32x_reg_read16(u32 a)
return sh2_comm_faker(a);
#else
if ((a & 0x30) == 0x20 && p32x_poll_detect(&m68k_poll, a, SekCyclesDoneT(), 0)) {
SekEndRun(16);
SekEndTimeslice(16);
}
#endif
@ -220,9 +220,11 @@ static void p32x_reg_write8(u32 a, u32 d)
if ((a & 0x30) == 0x20) {
u8 *r8 = (u8 *)r;
r8[a ^ 1] = d;
if (p32x_poll_undetect(&sh2_poll[0], 0) || p32x_poll_undetect(&sh2_poll[1], 0))
// if some SH2 is busy waiting, it needs to see the result ASAP
SekEndRun(16);
p32x_poll_undetect(&sh2_poll[0], 0);
p32x_poll_undetect(&sh2_poll[1], 0);
// if some SH2 is busy waiting, it needs to see the result ASAP
if (SekCyclesLeftNoMCD > 32)
SekEndRun(32);
return;
}
}
@ -265,9 +267,11 @@ static void p32x_reg_write16(u32 a, u32 d)
// comm port
else if ((a & 0x30) == 0x20 && r[a / 2] != d) {
r[a / 2] = d;
if (p32x_poll_undetect(&sh2_poll[0], 0) || p32x_poll_undetect(&sh2_poll[1], 0))
// if some SH2 is busy waiting, it needs to see the result ASAP
SekEndRun(16);
p32x_poll_undetect(&sh2_poll[0], 0);
p32x_poll_undetect(&sh2_poll[1], 0);
// same as for w8
if (SekCyclesLeftNoMCD > 32)
SekEndRun(32);
return;
}
// PWM

5
pico/pico_cmn.c
View file

@ -5,6 +5,7 @@
#define CYCLES_M68K_VINT_LAG 68
#define CYCLES_M68K_ASD 148
#define CYCLES_S68K_LINE 795
#define CYCLES_S68K_VINT_LAG 111
#define CYCLES_S68K_ASD 241
// pad delay (for 6 button pads)
@ -178,7 +179,7 @@ static int PicoFrameHints(void)
// there must be a delay after vblank bit is set and irq is asserted (Mazin Saga)
// also delay between F bit (bit 7) is set in SR and IRQ happens (Ex-Mutants)
// also delay between last H-int and V-int (Golden Axe 3)
SekRunM68k(CYCLES_M68K_VINT_LAG);
CPUS_RUN(CYCLES_M68K_VINT_LAG, CYCLES_S68K_VINT_LAG);
if (pv->reg[1]&0x20) {
elprintf(EL_INTS, "vint: @ %06x [%i]", SekPc, SekCycleCnt);
@ -201,7 +202,7 @@ static int PicoFrameHints(void)
// Run scanline:
if (Pico.m.dma_xfers) SekCyclesBurn(CheckDMA());
CPUS_RUN(CYCLES_M68K_LINE - CYCLES_M68K_VINT_LAG - CYCLES_M68K_ASD,
CYCLES_S68K_LINE - CYCLES_S68K_ASD);
CYCLES_S68K_LINE - CYCLES_S68K_VINT_LAG - CYCLES_S68K_ASD);
#ifdef PICO_CD
update_chips();

2
pico/pico_int.h
View file

@ -231,7 +231,7 @@ typedef void (z80_write_f)(unsigned int a, unsigned char data);
#include "cpu/sh2mame/sh2.h"
SH2 msh2, ssh2;
#define ash2_end_run(after) sh2_icount = after
#define ash2_end_run(after) if (sh2_icount > (after)) sh2_icount = after
#define ash2_cycles_done() (sh2->cycles_aim - sh2_icount)
#define sh2_pc(c) (c) ? ssh2.ppc : msh2.ppc