#include "../pico_int.h"
#include "../sound/ym2612.h"
+SH2 sh2s[2];
struct Pico32x Pico32x;
+static void sh2_irq_cb(int id, int level)
+{
+ // diagnostic for now
+ elprintf(EL_32X, "%csh2 ack %d @ %08x", id ? 's' : 'm', level, sh2_pc(id));
+}
+
+void p32x_update_irls(void)
+{
+ int irqs, mlvl = 0, slvl = 0;
+
+ // msh2
+ irqs = (Pico32x.sh2irqs | Pico32x.sh2irqi[0]) & ((Pico32x.sh2irq_mask[0] << 3) | P32XI_VRES);
+ while ((irqs >>= 1))
+ mlvl++;
+ mlvl *= 2;
+
+ // ssh2
+ irqs = (Pico32x.sh2irqs | Pico32x.sh2irqi[1]) & ((Pico32x.sh2irq_mask[1] << 3) | P32XI_VRES);
+ while ((irqs >>= 1))
+ slvl++;
+ slvl *= 2;
+
+ elprintf(EL_32X, "update_irls: m %d, s %d", mlvl, slvl);
+ sh2_irl_irq(&msh2, mlvl);
+ sh2_irl_irq(&ssh2, slvl);
+ mlvl = mlvl ? 1 : 0;
+ slvl = slvl ? 1 : 0;
+ p32x_poll_event(mlvl | (slvl << 1), 0);
+}
+
void Pico32xStartup(void)
{
elprintf(EL_STATUS|EL_32X, "32X startup");
PicoAHW |= PAHW_32X;
PicoMemSetup32x();
- sh2_init(&msh2);
+ sh2_init(&msh2, 0);
+ msh2.irq_callback = sh2_irq_cb;
sh2_reset(&msh2);
- sh2_init(&ssh2);
+ sh2_init(&ssh2, 1);
+ ssh2.irq_callback = sh2_irq_cb;
sh2_reset(&ssh2);
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();
}
Pico32x.regs[0] = 0x0082; // SH2 reset?
Pico32x.vdp_regs[0x0a/2] = P32XV_VBLK|P32XV_HBLK|P32XV_PEN;
+ Pico32x.sh2_regs[0] = P32XS2_ADEN;
}
void PicoUnload32x(void)
// enter vblank
Pico32x.vdp_regs[0x0a/2] |= P32XV_VBLK|P32XV_PEN;
- // swap waits until vblank
+ // FB swap waits until vblank
if ((Pico32x.vdp_regs[0x0a/2] ^ Pico32x.pending_fb) & P32XV_FS) {
Pico32x.vdp_regs[0x0a/2] &= ~P32XV_FS;
Pico32x.vdp_regs[0x0a/2] |= Pico32x.pending_fb;
Pico32xSwapDRAM(Pico32x.pending_fb ^ 1);
}
+
+ Pico32x.sh2irqs |= P32XI_VINT;
+ p32x_update_irls();
+ 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 ((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 (Pico32x.emu_flags & P32XF_68KPOLL) {
+ SekCycleCnt += cyc;
+ return;
+ }
+#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 700
+//#define SH2_LINE_CYCLES 735
+#define CYCLES_M68K2SH2(x) ((x) * 6 / 4)
#define PICO_32X
-#define RUN_SH2S \
- if (!(Pico32x.emu_flags & P32XF_MSH2POLL)) \
- sh2_execute(&msh2, 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 STEP_68K 24
+#define CPUS_RUN_LOCKSTEP(m68k_cycles,s68k_cycles) \
+{ \
+ int i; \
+ 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 CPUS_RUN CPUS_RUN_SIMPLE
+//#define CPUS_RUN CPUS_RUN_LOCKSTEP
#include "../pico_cmn.c"
void PicoFrame32x(void)
{
- if ((Pico32x.vdp_regs[0] & 3 ) != 0) // no forced blanking
- Pico32x.vdp_regs[0x0a/2] &= ~(P32XV_VBLK|P32XV_PEN); // get out of vblank
+ pwm_frame_smp_cnt = 0;
+
+ Pico32x.vdp_regs[0x0a/2] &= ~P32XV_VBLK; // get out of vblank
+ if ((Pico32x.vdp_regs[0] & P32XV_Mx) != 0) // no forced blanking
+ Pico32x.vdp_regs[0x0a/2] &= ~P32XV_PEN; // no palette access
+
+ p32x_poll_event(3, 1);
PicoFrameStart();
PicoFrameHints();
+ elprintf(EL_32X, "poll: %02x", Pico32x.emu_flags);
}
+