/*
- * common code for pico.c and cd/pico.c
- * (C) notaz, 2007-2009
+ * common code for base/cd/32x
+ * (C) notaz, 2007-2009,2013
*
* This work is licensed under the terms of MAME license.
* See COPYING file in the top-level directory.
#define CYCLES_M68K_LINE 488 // suitable for both PAL/NTSC
#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)
-#define PAD_DELAY \
- if (PicoOpt&POPT_6BTN_PAD) { \
- if(Pico.m.padDelay[0]++ > 25) Pico.m.padTHPhase[0]=0; \
- if(Pico.m.padDelay[1]++ > 25) Pico.m.padTHPhase[1]=0; \
- }
+#define PAD_DELAY() { \
+ if(Pico.m.padDelay[0]++ > 25) Pico.m.padTHPhase[0]=0; \
+ if(Pico.m.padDelay[1]++ > 25) Pico.m.padTHPhase[1]=0; \
+}
// CPUS_RUN
#ifndef CPUS_RUN
-#define CPUS_RUN(m68k_cycles,s68k_cycles) \
+#define CPUS_RUN(m68k_cycles) \
SekRunM68k(m68k_cycles)
#endif
+// sync m68k to SekCycleAim
+static void SekSyncM68k(void)
+{
+ int cyc_do;
+ pprof_start(m68k);
+ pevt_log_m68k_o(EVT_RUN_START);
+
+ while ((cyc_do = SekCycleAim - SekCycleCnt) > 0) {
+ SekCycleCnt += cyc_do;
+
+#if defined(EMU_C68K)
+ PicoCpuCM68k.cycles = cyc_do;
+ CycloneRun(&PicoCpuCM68k);
+ SekCycleCnt -= PicoCpuCM68k.cycles;
+#elif defined(EMU_M68K)
+ SekCycleCnt += m68k_execute(cyc_do) - cyc_do;
+#elif defined(EMU_F68K)
+ SekCycleCnt += fm68k_emulate(cyc_do, 0) - cyc_do;
+#endif
+ }
+
+ SekCyclesLeft = 0;
+
+ SekTrace(0);
+ pevt_log_m68k_o(EVT_RUN_END);
+ pprof_end(m68k);
+}
+
+static inline void SekRunM68k(int cyc)
+{
+ SekCycleAim += cyc;
+ SekSyncM68k();
+}
+
static int PicoFrameHints(void)
{
struct PicoVideo *pv=&Pico.video;
int lines, y, lines_vis = 224, line_sample, skip, vcnt_wrap;
+ unsigned int cycles;
int hint; // Hint counter
+ pevt_log_m68k_o(EVT_FRAME_START);
pv->v_counter = Pico.m.scanline = 0;
if ((PicoOpt&POPT_ALT_RENDERER) && !PicoSkipFrame && (pv->reg[1]&0x40)) { // fast rend., display enabled
line_sample = 93;
}
- SekCyclesReset();
z80_resetCycles();
-#ifdef PICO_CD
- SekCyclesResetS68k();
-#endif
- PsndDacLine = 0;
- emustatus &= ~1;
+ PsndStartFrame();
pv->status&=~0x88; // clear V-Int, come out of vblank
//dprintf("-hint: %i", hint);
// This is to make active scan longer (needed for Double Dragon 2, mainly)
- CPUS_RUN(CYCLES_M68K_ASD, CYCLES_S68K_ASD);
+ CPUS_RUN(CYCLES_M68K_ASD);
for (y = 0; y < lines_vis; y++)
{
Pico.video.status|=0x200;
}
- PAD_DELAY
-#ifdef PICO_CD
- check_cd_dma();
-#endif
-#ifdef PICO_32X
- p32x_timers_do(1);
-#endif
+ PAD_DELAY();
// H-Interrupts:
if (--hint < 0) // y <= lines_vis: Comix Zone, Golden Axe
hint=pv->reg[10]; // Reload H-Int counter
pv->pending_ints|=0x10;
if (pv->reg[0]&0x10) {
- elprintf(EL_INTS, "hint: @ %06x [%i]", SekPc, SekCycleCnt);
+ elprintf(EL_INTS, "hint: @ %06x [%i]", SekPc, SekCyclesDone());
SekInterrupt(4);
}
}
// get samples from sound chips
if ((y == 224 || y == line_sample) && PsndOut)
{
+ cycles = SekCyclesDone();
+
if (Pico.m.z80Run && !Pico.m.z80_reset && (PicoOpt&POPT_EN_Z80))
- PicoSyncZ80(SekCycleCnt);
- if (ym2612.dacen && PsndDacLine <= y)
- PsndDoDAC(y);
+ PicoSyncZ80(cycles);
+#ifdef PICO_CD
+ if (PicoAHW & PAHW_MCD)
+ pcd_sync_s68k(cycles, 0);
+#endif
+#ifdef PICO_32X
+ p32x_sync_sh2s(cycles);
+#endif
PsndGetSamples(y);
}
// Run scanline:
+ line_base_cycles = SekCyclesDone();
if (Pico.m.dma_xfers) SekCyclesBurn(CheckDMA());
- CPUS_RUN(CYCLES_M68K_LINE, CYCLES_S68K_LINE);
+ CPUS_RUN(CYCLES_M68K_LINE);
-#ifdef PICO_CD
- update_chips();
-#else
if (PicoLineHook) PicoLineHook();
-#endif
+ pevt_log_m68k_o(EVT_NEXT_LINE);
}
if (!skip)
{
- if (DrawScanline < y)
+ if (Pico.est.DrawScanline < y)
PicoDrawSync(y - 1, 0);
#ifdef DRAW_FINISH_FUNC
DRAW_FINISH_FUNC();
Pico.video.status|=0x200;
memcpy(PicoPadInt, PicoPad, sizeof(PicoPadInt));
- PAD_DELAY
-#ifdef PICO_CD
- check_cd_dma();
-#endif
-#ifdef PICO_32X
- p32x_timers_do(1);
-#endif
+ PAD_DELAY();
// Last H-Int:
if (--hint < 0)
{
hint=pv->reg[10]; // Reload H-Int counter
pv->pending_ints|=0x10;
- //printf("rhint: %i @ %06x [%i|%i]\n", hint, SekPc, y, SekCycleCnt);
+ //printf("rhint: %i @ %06x [%i|%i]\n", hint, SekPc, y, SekCyclesDone());
if (pv->reg[0]&0x10) SekInterrupt(4);
}
pv->status|=0x08; // go into vblank
pv->pending_ints|=0x20;
-#ifdef PICO_32X
- p32x_start_blank();
-#endif
-
// the following SekRun is there for several reasons:
// 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)
- CPUS_RUN(CYCLES_M68K_VINT_LAG, CYCLES_S68K_VINT_LAG);
+ line_base_cycles = SekCyclesDone();
+ if (Pico.m.dma_xfers) SekCyclesBurn(CheckDMA());
+ CPUS_RUN(CYCLES_M68K_VINT_LAG);
if (pv->reg[1]&0x20) {
- elprintf(EL_INTS, "vint: @ %06x [%i]", SekPc, SekCycleCnt);
+ elprintf(EL_INTS, "vint: @ %06x [%i]", SekPc, SekCyclesDone());
SekInterrupt(6);
}
+
+ cycles = SekCyclesDone();
if (Pico.m.z80Run && !Pico.m.z80_reset && (PicoOpt&POPT_EN_Z80)) {
- PicoSyncZ80(SekCycleCnt);
+ PicoSyncZ80(cycles);
elprintf(EL_INTS, "zint");
z80_int();
}
+#ifdef PICO_CD
+ if (PicoAHW & PAHW_MCD)
+ pcd_sync_s68k(cycles, 0);
+#endif
+#ifdef PICO_32X
+ p32x_sync_sh2s(cycles);
+ p32x_start_blank();
+#endif
+
// get samples from sound chips
if (y == 224 && PsndOut)
- {
- if (ym2612.dacen && PsndDacLine <= y)
- PsndDoDAC(y);
PsndGetSamples(y);
- }
// 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_VINT_LAG - CYCLES_S68K_ASD);
+ CPUS_RUN(CYCLES_M68K_LINE - CYCLES_M68K_VINT_LAG - CYCLES_M68K_ASD);
-#ifdef PICO_CD
- update_chips();
-#else
if (PicoLineHook) PicoLineHook();
-#endif
+ pevt_log_m68k_o(EVT_NEXT_LINE);
lines = scanlines_total;
vcnt_wrap = Pico.m.pal ? 0x103 : 0xEB; // based on Gens, TODO: verify
pv->v_counter = (pv->v_counter << 1) | 1;
pv->v_counter &= 0xff;
- PAD_DELAY
-#ifdef PICO_CD
- check_cd_dma();
-#endif
-#ifdef PICO_32X
- p32x_timers_do(1);
-#endif
+ PAD_DELAY();
// Run scanline:
+ line_base_cycles = SekCyclesDone();
if (Pico.m.dma_xfers) SekCyclesBurn(CheckDMA());
- CPUS_RUN(CYCLES_M68K_LINE, CYCLES_S68K_LINE);
+ CPUS_RUN(CYCLES_M68K_LINE);
-#ifdef PICO_CD
- update_chips();
-#else
if (PicoLineHook) PicoLineHook();
-#endif
+ pevt_log_m68k_o(EVT_NEXT_LINE);
}
- // sync z80
+ // sync cpus
+ cycles = SekCyclesDone();
if (Pico.m.z80Run && !Pico.m.z80_reset && (PicoOpt&POPT_EN_Z80))
- PicoSyncZ80(Pico.m.pal ? 151809 : 127671); // cycles adjusted for converter
- if (PsndOut && ym2612.dacen && PsndDacLine <= lines-1)
- PsndDoDAC(lines-1);
+ PicoSyncZ80(cycles);
+ if (PsndOut && ym2612.dacen && PsndDacLine < lines)
+ PsndDoDAC(lines - 1);
+#ifdef PICO_CD
+ if (PicoAHW & PAHW_MCD)
+ pcd_sync_s68k(cycles, 0);
+#endif
+#ifdef PICO_32X
+ p32x_sync_sh2s(cycles);
+#endif
timers_cycle();
return 0;
#undef PAD_DELAY
#undef CPUS_RUN
+// vim:shiftwidth=2:ts=2:expandtab
notaz.gp2x.de / picodrive.git / blobdiff