mirror of
https://github.com/dborth/fceugx.git
synced 2024-11-01 06:55:05 +01:00
49 lines
995 B
C
49 lines
995 B
C
|
#include "mapinc.h"
|
||
|
|
|
||
|
|
static DECLFW(Mapper182_write)
|
||
|
|
{
|
||
|
|
switch(A&0xf003)
|
||
|
|
{
|
||
|
|
case 0xe003:IRQCount=V;IRQa=1;X6502_IRQEnd(FCEU_IQEXT);break;
|
||
|
|
case 0x8001:MIRROR_SET(V&1);break;
|
||
|
|
case 0xA000:mapbyte1[0]=V;break;
|
||
|
|
case 0xC000:
|
||
|
|
switch(mapbyte1[0]&7)
|
||
|
|
{
|
||
|
|
case 0:VROM_BANK2(0x0000,V>>1);break;
|
||
|
|
case 1:VROM_BANK1(0x1400,V);break;
|
||
|
|
case 2:VROM_BANK2(0x0800,V>>1);break;
|
||
|
|
case 3:VROM_BANK1(0x1c00,V);break;
|
||
|
|
case 4:ROM_BANK8(0x8000,V);break;
|
||
|
|
case 5:ROM_BANK8(0xA000,V);break;
|
||
|
|
case 6:VROM_BANK1(0x1000,V);break;
|
||
|
|
case 7:VROM_BANK1(0x1800,V);break;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void blop(void)
|
||
|
|
{
|
||
|
|
if(IRQa)
|
||
|
|
{
|
||
|
|
if(IRQCount)
|
||
|
|
{
|
||
|
|
IRQCount--;
|
||
|
|
if(!IRQCount)
|
||
|
|
{
|
||
|
|
IRQa=0;
|
||
|
|
X6502_IRQBegin(FCEU_IQEXT);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
void Mapper182_init(void)
|
||
|
|
{
|
||
|
|
SetWriteHandler(0x8000,0xFFFF,Mapper182_write);
|
||
|
|
GameHBIRQHook=blop;
|
||
|
|
}
|
||
|
|
|