merge mapper code from FCEUX

[fceu.git] / mappers / 156.c

/* FCE Ultra - NES/Famicom Emulator\r
 *\r
 * Copyright notice for this file:\r
 *  Copyright (C) 2009 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\r
 *\r
 * DIS23C01 DAOU ROM CONTROLLER, Korea\r
 * Metal Force (K)\r
 * Buzz and Waldog (K)\r
 * General's Son (K)\r
 *\r
 */\r
\r
#include "mapinc.h"\r
\r
static uint8 chrlo[8], chrhi[8], prg, mirr, mirrisused = 0;\r
// uint8 *WRAM=NULL;\r
static uint32 WRAMSIZE;\r
\r
static SFORMAT StateRegs[]=\r
{\r
  {&prg, 1, "PREG"},\r
  {chrlo, 8, "CRLO"},\r
  {chrhi, 8, "CRHI"},\r
  {&mirr, 1, "MIRR"},\r
  {0}\r
};\r
\r
static void Sync(void)\r
{\r
  uint32 i;\r
  for(i=0; i<8; i++)\r
    setchr1(i<<10, chrlo[i]|(chrhi[i] << 8));\r
  setprg8r(0x10,0x6000,0);\r
  setprg16(0x8000,prg);\r
  setprg16(0xC000,~0);\r
  if(mirrisused)\r
    setmirror(mirr ^ 1);\r
  else\r
    setmirror(MI_0);\r
}\r
\r
static DECLFW(M156Write)\r
{\r
  switch(A) {\r
   case 0xC000:\r
   case 0xC001:\r
   case 0xC002:\r
   case 0xC003: chrlo[A&3] = V; Sync(); break;\r
   case 0xC004:\r
   case 0xC005:\r
   case 0xC006:\r
   case 0xC007: chrhi[A&3] = V; Sync(); break;\r
   case 0xC008:\r
   case 0xC009:\r
   case 0xC00A:\r
   case 0xC00B: chrlo[4+(A&3)] = V; Sync(); break;\r
   case 0xC00C:\r
   case 0xC00D:\r
   case 0xC00E:\r
   case 0xC00F: chrhi[4+(A&3)] = V; Sync(); break;\r
   case 0xC010: prg = V; Sync(); break;\r
   case 0xC014: mirr = V; mirrisused = 1; Sync(); break;\r
  }\r
}\r
\r
static void M1566Reset()\r
{\r
	for(int i=0;i<8;i++)\r
	{\r
		chrlo[i]=0;\r
		chrhi[i]=0;\r
	}\r
	prg=0;\r
	mirr=0;\r
	mirrisused = 0;\r
}\r
\r
static void M156Power(void)\r
{\r
  Sync();\r
  SetReadHandler(0x6000,0xFFFF,CartBR);\r
  SetWriteHandler(0x6000,0x7FFF,CartBW);\r
  SetWriteHandler(0xC000,0xCFFF,M156Write);\r
\r
	M1566Reset();\r
}\r
\r
static void M156Close(void)\r
{\r
  if(WRAM)\r
    FCEU_gfree(WRAM);\r
  WRAM=NULL;\r
}\r
\r
static void StateRestore(int version)\r
{\r
  Sync();\r
}\r
\r
void Mapper156_Init(CartInfo *info)\r
{\r
  info->Power=M156Power;\r
  info->Close=M156Close;\r
\r
  WRAMSIZE=8192;\r
  WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r
  SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r
  AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r
\r
  GameStateRestore=StateRestore;\r
  AddExState(&StateRegs, ~0, 0, 0);\r
}\r