PICO_INTERNAL void PicoInitMCD(void)
{
SekInitS68k();
- Init_CD_Driver();
- gfx_init();
}
PICO_INTERNAL void PicoExitMCD(void)
{
- End_CD_Driver();
}
PICO_INTERNAL void PicoPowerMCD(void)
memset(&Pico_mcd->m, 0, sizeof(Pico_mcd->m));
cdc_init();
- Reset_CD();
+ gfx_init();
// cold reset state (tested)
Pico_mcd->m.state_flags = PCD_ST_S68K_RST;
void pcd_soft_reset(void)
{
- // Reset_CD(); // breaks Fahrenheit CD swap
+ elprintf(EL_CD, "cd: soft reset");
Pico_mcd->m.s68k_pend_ints = 0;
cdc_reset();
- CDD_Reset();
+ cdd_reset();
#ifdef _ASM_CD_MEMORY_C
//PicoMemResetCDdecode(1); // don't have to call this in 2M mode
#endif
+ memset(&Pico_mcd->s68k_regs[0x38], 0, 9);
+ Pico_mcd->s68k_regs[0x38+9] = 0x0f; // default checksum
+
pcd_event_schedule_s68k(PCD_EVENT_CDC, 12500000/75);
// TODO: test if register state/timers change
return 0;
}
-static __inline void SekRunS68k(unsigned int to)
+static void SekRunM68kOnce(void)
+{
+ int cyc_do;
+ pevt_log_m68k_o(EVT_RUN_START);
+
+ if ((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);
+}
+
+static void SekRunS68k(unsigned int to)
{
int cyc_do;
static void pcd_cdc_event(unsigned int now)
{
// 75Hz CDC update
- Check_CD_Command();
+ cdd_update();
+
+ /* check if a new CDD command has been processed */
+ if (!(Pico_mcd->s68k_regs[0x4b] & 0xf0))
+ {
+ /* reset CDD command wait flag */
+ Pico_mcd->s68k_regs[0x4b] = 0xf0;
+
+ if (Pico_mcd->s68k_regs[0x33] & PCDS_IEN4) {
+ elprintf(EL_INTS|EL_CD, "s68k: cdd irq 4");
+ SekInterruptS68k(4);
+ }
+ }
+
pcd_event_schedule(now, PCD_EVENT_CDC, 12500000/75);
}
SekCycleCnt = SekCycleAim - (s68k_left * 40220 >> 16);
}
- SekSyncM68k();
+ while (CYCLES_GT(SekCycleAim, SekCycleCnt)) {
+ SekRunM68kOnce();
+ if (Pico_mcd->m.need_sync) {
+ Pico_mcd->m.need_sync = 0;
+ pcd_sync_s68k(SekCycleCnt, 0);
+ }
+ }
}
void pcd_run_cpus_lockstep(int m68k_cycles)