RaySollium99/picodrive
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reset behavior changed, Puggsy detection added

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@405 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-03-30 20:24:17 +00:00
parent 65ca3034d4
commit 1cb1584b86
12 changed files with 63 additions and 39 deletions
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53
Pico/Pico.c
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@ -52,10 +52,32 @@ void PicoExit(void)
PicoExitMCD();
z80_exit();
if(SRam.data) free(SRam.data); SRam.data=0;
if (SRam.data) free(SRam.data); SRam.data=0;
}
int PicoReset(int hard)
void PicoPower(void)
{
// clear all memory of the emulated machine
memset(&Pico.ram,0,(unsigned int)&Pico.rom-(unsigned int)&Pico.ram);
memset(&Pico.video,0,sizeof(Pico.video));
memset(&Pico.m,0,sizeof(Pico.m));
Pico.video.pending_ints=0;
z80_reset();
// default VDP register values (based on Fusion)
Pico.video.reg[0] = Pico.video.reg[1] = 0x04;
Pico.video.reg[0xc] = 0x81;
Pico.video.reg[0xf] = 0x02;
if (PicoMCD & 1)
PicoPowerMCD();
PicoReset();
}
int PicoReset(void)
{
unsigned int region=0;
int support=0,hw=0,i=0;
@ -72,25 +94,12 @@ int PicoReset(int hard)
// s68k doesn't have the TAS quirk, so we just globally set normal TAS handler in MCD mode (used by Batman games).
SekSetRealTAS(PicoMCD & 1);
SekCycleCntT=0;
z80_reset();
// reset VDP state, VRAM and PicoMisc
//memset(&Pico.video,0,sizeof(Pico.video));
//memset(&Pico.vram,0,sizeof(Pico.vram));
memset(Pico.ioports,0,sizeof(Pico.ioports)); // needed for MCD to reset properly
memset(&Pico.m,0,sizeof(Pico.m));
Pico.video.pending_ints=0;
if (PicoMCD & 1)
// needed for MCD to reset properly, probably some bug hides behind this..
memset(Pico.ioports,0,sizeof(Pico.ioports));
emustatus = 0;
if (hard) {
// clear all memory of the emulated machine
memset(&Pico.ram,0,(unsigned int)&Pico.rom-(unsigned int)&Pico.ram);
}
// default VDP register values (based on Fusion)
Pico.video.reg[0] = Pico.video.reg[1] = 0x04;
Pico.video.reg[0xc] = 0x81;
Pico.video.reg[0xf] = 0x02;
Pico.m.dirtyPal = 1;
if(PicoRegionOverride)
@ -141,12 +150,16 @@ int PicoReset(int hard)
Pico.m.hardware=(unsigned char)(hw|0x20); // No disk attached
Pico.m.pal=pal;
Pico.video.status = 0x3408 | pal; // always set bits | vblank | pal
Pico.video.status = 0x3408 | pal; // 'always set' bits | vblank | pal
PsndReset(); // pal must be known here
// create an empty "dma" to cause 68k exec start at random frame location
if (Pico.m.dma_xfers == 0 && !(PicoOpt&0x10000))
Pico.m.dma_xfers = rand() & 0x1fff;
if (PicoMCD & 1) {
PicoResetMCD(hard);
PicoResetMCD();
return 0;
}