random warning fixes

[fceu.git] / boards / vrc7.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
 * YOKO Mortal Kombat V Pro, VRC7 pirate clone\r
 */\r
\r
#include "mapinc.h"\r
\r
static uint8 prg[3], chr[8], mirr;\r
static uint8 IRQLatch, IRQa, IRQd;\r
static uint32 IRQCount, CycleCount;\r
\r
static SFORMAT StateRegs[]=\r
{\r
  {prg, 3, "PRG"},\r
  {chr, 8, "CHR"},\r
  {&mirr, 1, "MIRR"},\r
  {&IRQa, 1, "IRQA"},\r
  {&IRQd, 1, "IRQD"},\r
  {&IRQLatch, 1, "IRQC"},\r
  {&IRQCount, 4, "IRQC"},\r
  {&CycleCount, 4, "CYCC"},\r
  {0}\r
};\r
\r
static void Sync(void)\r
{\r
  uint8 i;\r
  setprg8(0x8000,prg[0]);\r
  setprg8(0xa000,prg[1]);\r
  setprg8(0xc000,prg[2]);\r
  setprg8(0xe000,~0);\r
  for(i=0; i<8; i++)\r
    setchr1(i<<10,chr[i]);\r
  switch(mirr&3)\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(UNLVRC7Write)\r
{\r
  switch(A&0xF008)\r
  {\r
    case 0x8000: prg[0]=V; Sync(); break;\r
    case 0x8008: prg[1]=V; Sync(); break;\r
    case 0x9000: prg[2]=V; Sync(); break;\r
    case 0xa000: chr[0]=V; Sync(); break;\r
    case 0xa008: chr[1]=V; Sync(); break;\r
    case 0xb000: chr[2]=V; Sync(); break;\r
    case 0xb008: chr[3]=V; Sync(); break;\r
    case 0xc000: chr[4]=V; Sync(); break;\r
    case 0xc008: chr[5]=V; Sync(); break;\r
    case 0xd000: chr[6]=V; Sync(); break;\r
    case 0xd008: chr[7]=V; Sync(); break;\r
    case 0xe000: mirr=V; Sync(); break;\r
    case 0xe008:\r
      IRQLatch=V;\r
      X6502_IRQEnd(FCEU_IQEXT);\r
      break;\r
    case 0xf000:\r
      IRQa=V&2;\r
      IRQd=V&1;\r
      if(V&2)\r
        IRQCount=IRQLatch;\r
      CycleCount=0;\r
      X6502_IRQEnd(FCEU_IQEXT);\r
      break;\r
    case 0xf008:\r
      if(IRQd)\r
        IRQa=1;\r
      else\r
        IRQa=0;\r
      X6502_IRQEnd(FCEU_IQEXT);\r
      break;\r
  } \r
}\r
\r
static void UNLVRC7Power(void)\r
{\r
  Sync();\r
  SetReadHandler(0x8000,0xFFFF,CartBR);\r
  SetWriteHandler(0x8000,0xFFFF,UNLVRC7Write);\r
}\r
\r
static void UNLVRC7IRQHook(int a)\r
{\r
  if(IRQa)\r
  {\r
    CycleCount+=a*3;\r
    while(CycleCount>=341)\r
    {\r
      CycleCount-=341;\r
      IRQCount++;\r
      if(IRQCount==248)\r
      {\r
        X6502_IRQBegin(FCEU_IQEXT);\r
        IRQCount=IRQLatch;\r
      }\r
    }\r
  }\r
}\r
\r
static void StateRestore(int version)\r
{\r
  Sync();\r
}\r
\r
void UNLVRC7_Init(CartInfo *info)\r
{\r
  info->Power=UNLVRC7Power;\r
  MapIRQHook=UNLVRC7IRQHook;\r
  GameStateRestore=StateRestore;\r
  AddExState(&StateRegs, ~0, 0, 0);\r
}\r