merge mapper code from FCEUX

[fceu.git] / boards / edu2000.c

/* FCE Ultra - NES/Famicom Emulator\r
 *\r
 * Copyright notice for this file:\r
 *  Copyright (C) 2006 CaH4e3\r
 *\r
 * This program is free software; you can redistribute it and/or modify\r
 * it under the terms of the GNU General Public License as published by\r
 * the Free Software Foundation; either version 2 of the License, or\r
 * (at your option) any later version.\r
 *\r
 * This program is distributed in the hope that it will be useful,\r
 * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
 * GNU General Public License for more details.\r
 *\r
 * You should have received a copy of the GNU General Public License\r
 * along with this program; if not, write to the Free Software\r
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA\r
 *\r
 */\r
\r
#include "mapinc.h"\r
\r
static uint8 *WRAM=NULL;\r
static uint8 reg;\r
\r
static SFORMAT StateRegs[]=\r
{\r
  {&reg, 1, "REG"},\r
  {0}\r
};\r
\r
static void Sync(void)\r
{\r
  setchr8(0);\r
  setprg8r(0x10,0x6000,(reg&0xC0)>>6);\r
  setprg32(0x8000,reg&0x1F);\r
//  setmirror(((reg&0x20)>>5));\r
}\r
\r
static DECLFW(UNLEDU2000HiWrite)\r
{\r
//  FCEU_printf("%04x:%02x\n",A,V);\r
  reg=V;\r
  Sync();\r
}\r
\r
static void UNLEDU2000Power(void)\r
{\r
  setmirror(MI_0);\r
  SetReadHandler(0x6000,0xFFFF,CartBR);\r
  SetWriteHandler(0x6000,0xFFFF,CartBW);\r
  SetWriteHandler(0x8000,0xFFFF,UNLEDU2000HiWrite);\r
  reg=0;\r
  Sync();\r
}\r
\r
static void UNLEDU2000Close(void)\r
{\r
  if(WRAM)\r
    FCEU_gfree(WRAM);\r
  WRAM=NULL;\r
}\r
\r
static void UNLEDU2000Restore(int version)\r
{\r
  Sync();\r
}\r
\r
void UNLEDU2000_Init(CartInfo *info)\r
{\r
  info->Power=UNLEDU2000Power;\r
  info->Close=UNLEDU2000Close;\r
  GameStateRestore=UNLEDU2000Restore;\r
  WRAM=(uint8*)FCEU_gmalloc(32768);\r
  SetupCartPRGMapping(0x10,WRAM,32768,1);\r
  if(info->battery)\r
  {\r
  info->SaveGame[0]=WRAM;\r
  info->SaveGameLen[0]=32768;\r
  }\r
  AddExState(WRAM, 32768, 0, "WRAM");\r
  AddExState(StateRegs, ~0, 0, 0);\r
}\r