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partial gmv implementation

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@6 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2006-12-25 15:17:54 +00:00
parent 4f67228034
commit 312e9ce192
8 changed files with 109 additions and 48 deletions
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11
Pico/Memory.c
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@ -267,13 +267,16 @@ u32 OtherRead16(u32 a, int realsize)
}
// |=0x80 for Shadow of the Beast & Super Offroad; rotate fakes next fetched instruction for Time Killers
if (a==0xa11100) {
extern int z80stopCycle; // TODO: tidy
d=Pico.m.z80Run&1;
#if 0
if (!d) {
// do we need this?
extern int z80stopCycle; // TODO: tidy
int stop_before = SekCyclesDone() - z80stopCycle;
if (stop_before > 0 && stop_before <= 16*2) // Gens uses 16 here
if (stop_before > 0 && stop_before <= 16) // Gens uses 16 here
d = 1; // bus not yet available
}
#endif
d=(d<<8)|0x8000|Pico.m.rotate++;
dprintf("get_zrun: %04x [%i|%i] @%06x", d, Pico.m.scanline, SekCyclesDone(), SekPc);
goto end; }
@ -569,7 +572,9 @@ static void CPU_CALL PicoWrite8(u32 a,u8 d)
// dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);
if ((a&0xe00000)==0xe00000) { u8 *pm=(u8 *)(Pico.ram+((a^1)&0xffff)); pm[0]=d; return; } // Ram
if ((a&0xe00000)==0xe00000) {
if((a&0xffff)==0xf62a) dprintf("(f62a) = %02x [%i|%i] @ %x", d, Pico.m.scanline, SekCyclesDone(), SekPc);
u8 *pm=(u8 *)(Pico.ram+((a^1)&0xffff)); pm[0]=d; return; } // Ram
a&=0xffffff;
OtherWrite8(a,d,8);