/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
- * Copyright (C) 2002 Ben Parnell
+ * Copyright (C) 2002 Xodnizel
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
DECLFW(Mapper21_write)
{
- A|=((A>>5)&0xF);
+ A|=((A>>5)&0xF);
- if((A&0xF000)==0xA000)
- {
- ROM_BANK8(0xA000,V);
- X6502_Rebase();
- }
- else if((A&0xF000)==0x8000)
- {
+ if((A&0xF000)==0xA000)
+ ROM_BANK8(0xA000,V);
+ else if((A&0xF000)==0x8000)
+ {
if(K4sel&2)
ROM_BANK8(0xC000,V);
else
ROM_BANK8(0x8000,V);
- X6502_Rebase();
- }
- else if(A>=0xb000 && A<=0xefff)
- {
- A&=0xF006;
+ }
+ else if(A>=0xb000 && A<=0xefff)
+ {
+ A&=0xF006;
{
int x=((A>>2)&1)|((A-0xB000)>>11);
VROM_BANK1(x<<10,K4buf[x]);
}
- }
- else switch(A&0xF006)
+ }
+ else switch(A&0xF006)
{
- case 0x9000:
- switch(V&0x3)
- {
- case 0:MIRROR_SET(0);break;
- case 1:MIRROR_SET(1);break;
- case 2:onemir(0);break;
- case 3:onemir(1);break;
- }
- break;
- case 0x9006:
- case 0x9004:
- case 0x9002:if((K4sel&2)!=(V&2))
- {
- uint8 swa;
- swa=PRGBankList[0];
- ROM_BANK8(0x8000,PRGBankList[2]);
- ROM_BANK8(0xc000,swa);
- X6502_Rebase();
- }
- K4sel=V;
- break;
- case 0xf000:IRQLatch&=0xF0;IRQLatch|=V&0xF;break;
+ case 0x9000:
+ switch(V&0x3)
+ {
+ case 0:MIRROR_SET(0);break;
+ case 1:MIRROR_SET(1);break;
+ case 2:onemir(0);break;
+ case 3:onemir(1);break;
+ }
+ break;
+ case 0x9006:
+ case 0x9004:
+ case 0x9002:if((K4sel&2)!=(V&2))
+ {
+ uint8 swa;
+ swa=PRGBankList[0];
+ ROM_BANK8(0x8000,PRGBankList[2]);
+ ROM_BANK8(0xc000,swa);
+ }
+ K4sel=V;
+ break;
+ case 0xf000:IRQLatch&=0xF0;IRQLatch|=V&0xF;break;
case 0xf002:IRQLatch&=0x0F;IRQLatch|=V<<4;break;
- case 0xf004:IRQCount=IRQLatch;
- IRQa=V&2;K4IRQ=V&1;break;
- case 0xf006:IRQa=K4IRQ;break;
+ case 0xf004:IRQCount=IRQLatch;acount=0;
+ IRQa=V&2;K4IRQ=V&1;
+ X6502_IRQEnd(FCEU_IQEXT);
+ break;
+ case 0xf006:IRQa=K4IRQ;X6502_IRQEnd(FCEU_IQEXT);break;
}
}
static void FP_FASTAPASS(1) KonamiIRQHook(int a)
{
- #define LCYCS 114
+ #define LCYCS ((227*2)+1)
+ //#define LCYCS 341
if(IRQa)
- {
- acount+=a;
+ {
+// acount+=a*3;
+ acount+=a*4;
if(acount>=LCYCS)
{
doagainbub:acount-=LCYCS;IRQCount++;
- if(IRQCount&0x100) {TriggerIRQ();IRQCount=IRQLatch;}
+ if(IRQCount&0x100) {X6502_IRQBegin(FCEU_IQEXT);IRQCount=IRQLatch;}
if(acount>=LCYCS) goto doagainbub;
}
}