merge mapper code from FCEUX

[fceu.git] / mappers / 23.c

diff --git a/mappers/23.c b/mappers/23.c
deleted file mode 100644 (file)
index d61a555..0000000
--- a/mappers/23.c
+++ /dev/null
@@ -1,103 +0,0 @@
-/* FCE Ultra - NES/Famicom Emulator
- *
- * Copyright notice for this file:
- *  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
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include "mapinc.h"
-
-#define K4buf mapbyte2
-#define K4IRQ mapbyte1[1]
-#define K4sel mapbyte1[0]
-static int acount=0;
-static DECLFW(Mapper23_write)
-{
- if((A&0xF000)==0x8000)
- {
-  if(K4sel&2)
-   ROM_BANK8(0xC000,V);
-  else
-   ROM_BANK8(0x8000,V);
-  }
-  else if((A&0xF000)==0xA000)
-   ROM_BANK8(0xA000,V);
-  else
-  {
-   A|=((A>>2)&0x3)|((A>>4)&0x3)|((A>>6)&0x3);
-   A&=0xF003;
-   if(A>=0xb000 && A<=0xe003)
-   {
-    int x=((A>>1)&1)|((A-0xB000)>>11);
-
-    K4buf[x]&=(0xF0)>>((A&1)<<2);
-    K4buf[x]|=(V&0xF)<<((A&1)<<2);
-    VROM_BANK1(x<<10,K4buf[x]);
-   }
-   else
-    switch(A)
-    {
-     case 0xf000:X6502_IRQEnd(FCEU_IQEXT);IRQLatch&=0xF0;IRQLatch|=V&0xF;break;
-     case 0xf001:X6502_IRQEnd(FCEU_IQEXT);IRQLatch&=0x0F;IRQLatch|=V<<4;break;
-     case 0xf002:X6502_IRQEnd(FCEU_IQEXT);acount=0;IRQCount=IRQLatch;IRQa=V&2;K4IRQ=V&1;break;
-     case 0xf003:X6502_IRQEnd(FCEU_IQEXT);IRQa=K4IRQ;break;
-     case 0x9001:
-     case 0x9002:
-     case 0x9003:
-                 if((K4sel&2)!=(V&2))
-                 {
-                  uint8 swa;
-                  swa=PRGBankList[0];
-                  ROM_BANK8(0x8000,PRGBankList[2]);
-                  ROM_BANK8(0xc000,swa);
-                 }
-                 K4sel=V;
-                 break;
-     case 0x9000:
-            if(V!=0xFF)
-                     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;
-  }
- }
-}
-
-void FP_FASTAPASS(1) KonamiIRQHook2(int a)
-{
-  #define LCYCS 341
-  if(IRQa)
-  {
-   acount+=a*3;
-    if(acount>=LCYCS)
-    {
-     doagainbub:acount-=LCYCS;IRQCount++;
-     if(IRQCount&0x100) {X6502_IRQBegin(FCEU_IQEXT);IRQCount=IRQLatch;}
-     if(acount>=LCYCS) goto doagainbub;
-    }
- }
-}
-
-void Mapper23_init(void)
-{
-        SetWriteHandler(0x8000,0xffff,Mapper23_write);
-        MapIRQHook=KonamiIRQHook2;
-}
-