RaySollium99/picodrive
1
0
Fork 0
mirror of https://github.com/RaySollium99/picodrive.git synced 2025-09-06 23:58:04 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

cd: switch to CD drive emu code from genplus

Browse source 
same license, much cleaner code
This commit is contained in:
notaz 2013-10-06 21:08:07 +03:00
parent 3f23709ef3
commit 274fcc35aa
25 changed files with 1798 additions and 1824 deletions
Download patch file Download diff file Expand all files Collapse all files

24
pico/cd/mcd.c
View file

@ -22,13 +22,10 @@ void (*PicoMCDcloseTray)(void) = NULL;
PICO_INTERNAL void PicoInitMCD(void)
{
SekInitS68k();
Init_CD_Driver();
gfx_init();
}
PICO_INTERNAL void PicoExitMCD(void)
{
End_CD_Driver();
}
PICO_INTERNAL void PicoPowerMCD(void)
@ -45,9 +42,11 @@ PICO_INTERNAL void PicoPowerMCD(void)
memset(Pico_mcd->s68k_regs, 0, sizeof(Pico_mcd->s68k_regs));
memset(&Pico_mcd->pcm, 0, sizeof(Pico_mcd->pcm));
memset(&Pico_mcd->m, 0, sizeof(Pico_mcd->m));
Pico_mcd->s68k_regs[0x38+9] = 0x0f; // default checksum
cdc_init();
Reset_CD();
cdd_reset();
gfx_init();
// cold reset state (tested)
Pico_mcd->m.state_flags = PCD_ST_S68K_RST;
@ -62,7 +61,7 @@ void pcd_soft_reset(void)
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
@ -135,7 +134,20 @@ unsigned int pcd_cycles_m68k_to_s68k(unsigned int c)
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);
}