boards/konami-qtai.c

   1 /* FCE Ultra - NES/Famicom Emulator
   2  *
   3  * Copyright notice for this file:
   4  *  Copyright (C) 2005 CaH4e3
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  * CAI Shogakko no Sansu
  21  */
  22
  23 #include "mapinc.h"
  24
  25 static uint8 *CHRRAM=NULL;
  26 static uint8 SWRAM[4096];
  27
  28 static uint8 regs[16];
  29 static uint8 WRAM[4096];
  30 static SFORMAT StateRegs[]=
  31 {
  32   {&regs, 16, "REGS"},
  33   {WRAM, 4096, "WRAM"},
  34   {0}
  35 };
  36
  37 static void Sync(void)
  38 {
  39   if(regs[5]&0x40)
  40   {
  41     setchr4r(0,0x1000,regs[5]&0x3F);
  42   }
  43   else
  44   {
  45     setchr4r(0x10,0x0000,regs[5]);
  46     setchr4r(0x10,0x1000,regs[5]^1);
  47   }
  48   setprg8r((regs[2]>>6)&1,0x8000,(regs[2]&0x3F));
  49   setprg8r((regs[3]>>6)&1,0xA000,(regs[3]&0x3F));
  50   setprg8r((regs[4]>>6)&1,0xC000,(regs[4]&0x3F));
  51   setprg8r(1,0xE000,~0);
  52   setmirror((regs[0xA]&3));
  53 }
  54
  55 static DECLFW(M190Write)
  56 {
  57 // FCEU_printf("write %04x:%04x %d, %d\n",A,V,scanline,timestamp);
  58   regs[(A&0x0F00)>>8]=V;
  59   Sync();
  60 }
  61
  62 static DECLFR(M190Read)
  63 {
  64 // FCEU_printf("read %04x:%04x %d, %d\n",A,regs[(A&0x0F00)>>8],scanline,timestamp);
  65   return regs[(A&0x0F00)>>8];
  66 }
  67
  68 static DECLFR(AWRAM)
  69 {
  70   return(WRAM[A-0x7000]);
  71 }
  72 static DECLFW(BWRAM)
  73 {
  74   WRAM[A-0x7000]=V;
  75 }
  76
  77 static DECLFR(ASWRAM)
  78 {
  79   return(SWRAM[A-0x6000]);
  80 }
  81 static DECLFW(BSWRAM)
  82 {
  83   SWRAM[A-0x6000]=V;
  84 }
  85
  86 static void M190Power(void)
  87 {
  88   setvram8(CHRRAM);
  89   SetReadHandler(0x8000,0xFFFF,CartBR);
  90   SetWriteHandler(0x8000,0xFFFF,M190Write);
  91 // SetReadHandler(0xDA00,0xDA00,M190Read);
  92 // SetReadHandler(0xDB00,0xDB00,M190Read);
  93   SetReadHandler(0xDC00,0xDC00,M190Read);
  94   SetReadHandler(0xDD00,0xDD00,M190Read);
  95   SetReadHandler(0x7000,0x7FFF,AWRAM);
  96   SetWriteHandler(0x7000,0x7FFF,BWRAM);
  97   SetReadHandler(0x6000,0x6FFF,ASWRAM);
  98   SetWriteHandler(0x6000,0x6FFF,BSWRAM);
  99   Sync();
 100 }
 101
 102 static void M190Close(void)
 103 {
 104   if(CHRRAM)
 105     FCEU_gfree(CHRRAM);
 106   CHRRAM=NULL;
 107 }
 108
 109 static void StateRestore(int version)
 110 {
 111   Sync();
 112 }
 113
 114 void Mapper190_Init(CartInfo *info)
 115 {
 116   info->Power=M190Power;
 117   info->Close=M190Close;
 118   if(info->battery)
 119   {
 120     info->SaveGame[0]=SWRAM;
 121     info->SaveGameLen[0]=4096;
 122   }
 123   GameStateRestore=StateRestore;
 124   CHRRAM=(uint8*)FCEU_gmalloc(8192);
 125   SetupCartCHRMapping(0x10,CHRRAM,8192,1);
 126   AddExState(CHRRAM, 8192, 0, "CHRRAM");
 127   AddExState(&StateRegs, ~0, 0, 0);
 128 }