merge mappers from FCEU-mm

[fceu.git] / boards / sc-127.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
 * Wario Land II (Kirby hack) VRC4\r
 */\r
\r
#include "mapinc.h"\r
\r
static uint8 reg[8], chr[8];\r
static uint8 *WRAM=NULL;\r
static uint32 WRAMSIZE;\r
static uint16 IRQCount, IRQa;\r
\r
static SFORMAT StateRegs[]=\r
{\r
  {reg, 8, "REGS"},\r
  {chr, 8, "CHRS"},\r
  {&IRQCount, 16, "IRQc"},\r
  {&IRQa, 16, "IRQa"},\r
  {0}\r
};\r
\r
static void Sync(void)\r
{\r
  int i;\r
  setprg8(0x8000,reg[0]);\r
  setprg8(0xA000,reg[1]);\r
  setprg8(0xC000,reg[2]);\r
  for(i=0; i<8; i++)\r
    setchr1(i << 10,chr[i]);\r
  setmirror(reg[3]^1);\r
}\r
\r
static DECLFW(UNLSC127Write)\r
{\r
  switch(A)\r
  {\r
    case 0x8000: reg[0] = V; break; \r
    case 0x8001: reg[1] = V; break;\r
    case 0x8002: reg[2] = V; break;\r
    case 0x9000: chr[0] = V; break;\r
    case 0x9001: chr[1] = V; break;\r
    case 0x9002: chr[2] = V; break;\r
    case 0x9003: chr[3] = V; break;\r
    case 0x9004: chr[4] = V; break;\r
    case 0x9005: chr[5] = V; break;\r
    case 0x9006: chr[6] = V; break;\r
    case 0x9007: chr[7] = V; break;\r
    case 0xC002: IRQa=0; X6502_IRQEnd(FCEU_IQEXT); break;\r
    case 0xC005: IRQCount=V; break;\r
    case 0xC003: IRQa=1; break;\r
    case 0xD001: reg[3] = V; break;\r
  }\r
  Sync();\r
}\r
\r
static void UNLSC127Power(void)\r
{\r
  Sync();\r
  setprg8r(0x10,0x6000,0);\r
  setprg8(0xE000,~0);\r
  SetReadHandler(0x6000,0x7fff,CartBR);\r
  SetWriteHandler(0x6000,0x7fff,CartBW);\r
  SetReadHandler(0x8000,0xFFFF,CartBR);\r
  SetWriteHandler(0x8000,0xFFFF,UNLSC127Write);\r
}\r
\r
static void UNLSC127IRQ(void)\r
{\r
 if(IRQa)\r
 {\r
   IRQCount--;\r
   if(IRQCount==0)\r
   {\r
    X6502_IRQBegin(FCEU_IQEXT);\r
    IRQa=0;\r
   }\r
 }\r
}\r
\r
static void UNLSC127Reset(void)\r
{\r
}\r
\r
static void UNLSC127Close(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 UNLSC127_Init(CartInfo *info)\r
{\r
  info->Reset=UNLSC127Reset;\r
  info->Power=UNLSC127Power;\r
  info->Close=UNLSC127Close;\r
  GameHBIRQHook=UNLSC127IRQ;\r
  GameStateRestore=StateRestore;\r
  WRAMSIZE=8192;\r
  WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r
  SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r
  AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r
  AddExState(&StateRegs, ~0, 0, 0);\r
}\r