#include "../pico_int.h"
#include "../sound/ym2612.h"
+SH2 sh2s[2];
struct Pico32x Pico32x;
static void sh2_irq_cb(int id, int level)
if (!Pico.m.pal)
Pico32x.vdp_regs[0] |= P32XV_nPAL;
+ PREG8(Pico32xMem->sh2_peri_regs[0], 4) =
+ PREG8(Pico32xMem->sh2_peri_regs[1], 4) = 0x84; // SCI SSR
+
emu_32x_startup();
}
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
}
// ~1463.8, but due to cache misses and slow mem
// it's much lower than that
-#define SH2_LINE_CYCLES 735
+//#define SH2_LINE_CYCLES 735
+#define CYCLES_M68K2SH2(x) ((x) * 6 / 4)
#define PICO_32X
-#define RUN_SH2S_SIMPLE \
- if (!(Pico32x.emu_flags & (P32XF_MSH2POLL|P32XF_MSH2VPOLL))) \
- sh2_execute(&msh2, SH2_LINE_CYCLES); \
- if (!(Pico32x.emu_flags & (P32XF_SSH2POLL|P32XF_SSH2VPOLL))) \
- sh2_execute(&ssh2, SH2_LINE_CYCLES);
+#define CPUS_RUN_SIMPLE(m68k_cycles,s68k_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 RUN_SH2S_LOCKSTEP \
+#define STEP_68K 24
+#define CPUS_RUN_LOCKSTEP(m68k_cycles,s68k_cycles) \
{ \
int i; \
- for (i = 0; i < SH2_LINE_CYCLES; i+= 3) { \
- sh2_execute(&msh2, 3); \
- sh2_execute(&ssh2, 3); \
+ for (i = 0; i <= (m68k_cycles) - STEP_68K; i += 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))) \
+ sh2_execute(&ssh2, CYCLES_M68K2SH2(STEP_68K)); \
} \
+ /* last step */ \
+ i = (m68k_cycles) - 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 RUN_SH2S RUN_SH2S_SIMPLE
+#define CPUS_RUN CPUS_RUN_SIMPLE
+//#define CPUS_RUN CPUS_RUN_LOCKSTEP
#include "../pico_cmn.c"
PicoFrameStart();
PicoFrameHints();
+ elprintf(EL_32X, "poll: %02x", Pico32x.emu_flags);
}