merge mappers from FCEU-mm

[fceu.git] / boards / cityfighter.c

/* FCE Ultra - NES/Famicom Emulator\r
 *\r
 * Copyright notice for this file:\r
 *  Copyright (C) 2007 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
 * City Fighter IV sith Sound VRC4 hacked\r
 */\r
\r
#include "mapinc.h"\r
\r
static uint8 IRQCount;\r
static uint8 IRQPre;\r
static uint8 IRQa;\r
static uint8 prg_reg, prg_mode, mirr;\r
static uint8 chr_reg[8];\r
\r
static SFORMAT StateRegs[]=\r
{\r
  {&IRQCount, 1, "IRQC"},\r
  {&IRQPre, 1, "IRQP"},\r
  {&IRQa, 1, "IRQA"},\r
  {&prg_reg, 1, "PREG"},\r
  {&prg_mode, 1, "PMOD"},\r
  {&mirr, 1, "MIRR"},\r
  {chr_reg, 8, "CREG"},\r
  {0}\r
};\r
\r
static void Sync(void)\r
{\r
  setprg32(0x8000,prg_reg>>2);\r
  if(!prg_mode)\r
    setprg8(0xC000,prg_reg);\r
  int i;\r
  for(i=0; i<8; i++)\r
     setchr1(i<<10,chr_reg[i]);     \r
  switch (mirr)\r
  {\r
  case 0: setmirror(MI_V); break;\r
  case 1: setmirror(MI_H); break;\r
  case 2: setmirror(MI_0); break;\r
  case 3: setmirror(MI_1); break;\r
  }\r
}\r
\r
static DECLFW(UNLCITYFIGHTWrite)\r
{\r
  switch(A&0xF00C)\r
  {\r
    case 0x9000: prg_reg=V&0xC; mirr=V&3; break;\r
    case 0x9004:\r
    case 0x9008:\r
    case 0x900C: prg_reg=V&0xC; break;\r
    case 0xC000:\r
    case 0xC004:\r
    case 0xC008:\r
    case 0xC00C: prg_mode=V&1; break;\r
    case 0xD000: chr_reg[0]=(chr_reg[0]&0xF0)|(V&0x0F); break;\r
    case 0xD004: chr_reg[0]=(chr_reg[0]&0x0F)|(V<<4); break;\r
    case 0xD008: chr_reg[1]=(chr_reg[1]&0xF0)|(V&0x0F); break;\r
    case 0xD00C: chr_reg[1]=(chr_reg[1]&0x0F)|(V<<4); break;\r
    case 0xA000: chr_reg[2]=(chr_reg[2]&0xF0)|(V&0x0F); break;\r
    case 0xA004: chr_reg[2]=(chr_reg[2]&0x0F)|(V<<4); break;\r
    case 0xA008: chr_reg[3]=(chr_reg[3]&0xF0)|(V&0x0F); break;\r
    case 0xA00C: chr_reg[3]=(chr_reg[3]&0x0F)|(V<<4); break;\r
    case 0xB000: chr_reg[4]=(chr_reg[4]&0xF0)|(V&0x0F); break;\r
    case 0xB004: chr_reg[4]=(chr_reg[4]&0x0F)|(V<<4); break;\r
    case 0xB008: chr_reg[5]=(chr_reg[5]&0xF0)|(V&0x0F); break;\r
    case 0xB00C: chr_reg[5]=(chr_reg[5]&0x0F)|(V<<4); break;\r
    case 0xE000: chr_reg[6]=(chr_reg[6]&0xF0)|(V&0x0F); break;\r
    case 0xE004: chr_reg[6]=(chr_reg[6]&0x0F)|(V<<4); break;\r
    case 0xE008: chr_reg[7]=(chr_reg[7]&0xF0)|(V&0x0F); break;\r
    case 0xE00C: chr_reg[7]=(chr_reg[7]&0x0F)|(V<<4); break;\r
//    case 0xF004: IRQCount=((IRQCount&0xF0)|(V&0xF)); break;\r
//    case 0xF000: IRQCount=((IRQCount&0x0F)|((V&0xF)<<4)); break;\r
    case 0xF008: IRQa=V&2; X6502_IRQEnd(FCEU_IQEXT); break;\r
//    case 0xF00C: IRQPre=16; break;\r
    default:\r
      FCEU_printf("bs %04x %02x\n",A,V);\r
  }\r
  Sync();\r
}\r
\r
static DECLFW(UNLCITYFIGHTWriteLo)\r
{\r
      FCEU_printf("bs %04x %02x\n",A,V);\r
}\r
\r
static void UNLCITYFIGHTIRQ(void)\r
{\r
  //if(IRQa)\r
  {\r
//    IRQCount--;\r
//    if((IRQCount>>1)==0)\r
//      X6502_IRQBegin(FCEU_IQEXT);\r
//    if(scanline==100) X6502_IRQBegin(FCEU_IQEXT);\r
  }\r
}\r
\r
static void UNLCITYFIGHTPower(void)\r
{\r
  prg_reg = 0;\r
  Sync();\r
  SetReadHandler(0x8000,0xFFFF,CartBR);\r
  SetWriteHandler(0x4020,0x7FFF,UNLCITYFIGHTWriteLo);\r
  SetWriteHandler(0x8000,0xFFFF,UNLCITYFIGHTWrite);\r
}\r
\r
static void StateRestore(int version)\r
{\r
  Sync();\r
}\r
\r
void UNLCITYFIGHT_Init(CartInfo *info)\r
{\r
  info->Power=UNLCITYFIGHTPower;\r
  GameHBIRQHook=UNLCITYFIGHTIRQ;\r
  GameStateRestore=StateRestore;\r
  AddExState(&StateRegs, ~0, 0, 0);\r
}\r