extern unsigned char formatted_bram[4*0x10];
+extern unsigned int s68k_poll_adclk;
+
+
+#define dump_ram(ram,fname) \
+{ \
+ int i, d; \
+ FILE *f; \
+\
+ for (i = 0; i < sizeof(ram); i+=2) { \
+ d = (ram[i]<<8) | ram[i+1]; \
+ *(unsigned short *)(ram+i) = d; \
+ } \
+ f = fopen(fname, "wb"); \
+ if (f) { \
+ fwrite(ram, 1, sizeof(ram), f); \
+ fclose(f); \
+ } \
+ for (i = 0; i < sizeof(ram); i+=2) { \
+ d = (ram[i]<<8) | ram[i+1]; \
+ *(unsigned short *)(ram+i) = d; \
+ } \
+}
int PicoInitMCD(void)
void PicoExitMCD(void)
{
End_CD_Driver();
+
+ //dump_ram(Pico_mcd->prg_ram, "prg.bin");
+ //dump_ram(Pico.ram, "ram.bin");
}
int PicoResetMCD(int hard)
memset(&Pico_mcd->m, 0, sizeof(Pico_mcd->m));
*(unsigned int *)(Pico_mcd->bios + 0x70) = 0xffffffff; // reset hint vector (simplest way to implement reg6)
- Pico_mcd->m.state_flags |= 2; // s68k reset pending
+ Pico_mcd->m.state_flags |= 1; // s68k reset pending
Pico_mcd->s68k_regs[3] = 1; // 2M word RAM mode with m68k access after reset
Reset_CD();
gfx_cd_reset();
#ifdef _ASM_CD_MEMORY_C
PicoMemResetCD(1);
- PicoMemResetCDdecode(1);
+ //PicoMemResetCDdecode(1); // don't have to call this in 2M mode
#endif
return 0;
// update gfx chip
if (Pico_mcd->rot_comp.Reg_58 & 0x8000)
gfx_cd_update();
+
+ // delayed setting of DMNA bit (needed for Silpheed)
+ if (Pico_mcd->m.state_flags & 2) {
+ Pico_mcd->m.state_flags &= ~2;
+ Pico_mcd->s68k_regs[3] |= 2;
+ Pico_mcd->s68k_regs[3] &= ~1;
+#ifdef USE_POLL_DETECT
+ if ((s68k_poll_adclk&0xfe) == 2) {
+ SekSetStopS68k(0); s68k_poll_adclk = 0;
+ }
+#endif
+ }
}
// Run scanline:
//dprintf("m68k starting exec @ %06x", SekPc);
- if(Pico.m.dma_bytes) SekCycleCnt+=CheckDMA();
- if((PicoOpt & 0x2000) && (Pico_mcd->m.busreq&3) == 1) {
+ if (Pico.m.dma_bytes) SekCycleCnt+=CheckDMA();
+ if ((PicoOpt & 0x2000) && (Pico_mcd->m.busreq&3) == 1) {
SekRunPS(cycles_68k, cycles_s68k); // "better/perfect sync"
} else {
SekRun(cycles_68k);
SekRunS68k(cycles_s68k);
}
- if((PicoOpt&4) && Pico.m.z80Run) {
+ if ((PicoOpt&4) && Pico.m.z80Run) {
Pico.m.z80Run|=2;
z80CycleAim+=cycles_z80;
total_z80+=z80_run(z80CycleAim-total_z80);
}
// draw a frame just after vblank in alternative render mode
- if(!PicoSkipFrame && (PicoOpt&0x10))
+ if (!PicoSkipFrame && (PicoOpt&0x10))
PicoFrameFull();
return 0;