/* 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
#include "mapinc.h"
-void FP_FASTAPASS(1) m83IRQHook(int a)
+
+/*void Mapper83_init(void)
+{
+
+}
+*/
+static void FP_FASTAPASS(1) m83IRQHook(int a)
{
if(IRQa)
{
IRQCount-=a;
if(IRQCount<0)
{
- TriggerIRQ();
+ X6502_IRQBegin(FCEU_IQEXT);
IRQa=0;
IRQCount=0xFFFF;
}
static void m83prg(void)
{
- ROM_BANK16(0x8000,mapbyte1[0]&0x3F);
+ ROM_BANK16(0x8000,(mapbyte1[0]&0x3F));
ROM_BANK16(0xC000,(mapbyte1[0]&0x30)|0xF);
- X6502_Rebase();
}
static void m83chr(void)
{
- int x;
- for(x=0;x<8;x++)
- VROM_BANK1(x*0x400,mapbyte2[x]|((mapbyte1[0]&0x30)<<4));
+// if(0)
+// {
+// VROM_BANK2(0x0000,mapbyte2[0]);
+// VROM_BANK2(0x0800,mapbyte2[1]);
+// VROM_BANK2(0x1000,mapbyte2[6]);
+// VROM_BANK2(0x1800,mapbyte2[7]);
+// }
+// else
+// {
+ int x;
+ for(x=0;x<8;x++)
+ VROM_BANK1(x*0x400,mapbyte2[x]|((mapbyte1[0]&0x30)<<4));
+// }
}
static DECLFW(Mapper83_write)
}
break;
case 0x8100:
+ mapbyte3[0]=V&0x80;
switch(V&0x3)
{
case 0x00:MIRROR_SET2(1);break;
case 0x03:onemir(1);break;
}
break;
- case 0x8200:IRQCount&=0xFF00;IRQCount|=V;break;
- case 0x8201:IRQa=1;IRQCount&=0xFF;IRQCount|=V<<8;break;
- //case 0x8300:ROM_BANK8(0x8000,V);break;
- //case 0x8301:ROM_BANK8(0xA000,V);break;
- //case 0x8302:ROM_BANK8(0xC000,V);break;
+ case 0x8200:IRQCount&=0xFF00;IRQCount|=V;X6502_IRQEnd(FCEU_IQEXT);break;
+ case 0x8201:IRQa=mapbyte3[0];IRQCount&=0xFF;IRQCount|=V<<8;break;
+ case 0x8300:ROM_BANK8(0x8000,V);break;
+ case 0x8301:ROM_BANK8(0xA000,V);break;
+ case 0x8302:ROM_BANK8(0xC000,V);break;
case 0x8310:mapbyte2[0]=V;m83chr();break;
case 0x8311:mapbyte2[1]=V;m83chr();break;
case 0x8312:mapbyte2[2]=V;m83chr();break;
case 0x8315:mapbyte2[5]=V;m83chr();break;
case 0x8316:mapbyte2[6]=V;m83chr();break;
case 0x8317:mapbyte2[7]=V;m83chr();break;
+ case 0x8318:mapbyte1[1]=V;m83prg();break;
}
// printf("$%04x:$%02x, $%04x\n",A,V,X.PC.W);
-
+
}
void Mapper83_init(void)
{
-
ROM_BANK8(0xc000,0x1e);
ROM_BANK8(0xe000,0x1f);
SetReadHandler(0x5100,0x5103,rdlow);
SetWriteHandler(0x5100,0x5103,wrlow);
SetWriteHandler(0x8000,0xffff,Mapper83_write);
+ mapbyte1[1]=0xF;
}