random warning fixes

[fceu.git] / boards / KS7017.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
 * FDS Conversion\r
 *\r
 */\r
\r
#include "mapinc.h"\r
\r
static uint8 reg, mirr;\r
static int32 IRQa, IRQCount, IRQLatch;\r
static uint8 *WRAM=NULL;\r
static uint32 WRAMSIZE;\r
\r
static SFORMAT StateRegs[]=\r
{\r
  {&mirr, 1, "MIRR"},\r
  {&reg, 1, "REGS"},\r
  {&IRQa, 4, "IRQA"},\r
  {&IRQCount, 4, "IRQC"},\r
  {&IRQLatch, 4, "IRQL"},\r
  {0}\r
};\r
\r
static void Sync(void)\r
{\r
  setprg16(0x8000,reg);\r
  setprg16(0xC000,2);\r
  setmirror(mirr);\r
}\r
\r
static DECLFW(UNLKS7017Write)\r
{\r
//  FCEU_printf("bs %04x %02x\n",A,V);\r
    if((A & 0xFF00) == 0x4A00)\r
    {\r
      reg = ((A >> 2) & 3)|((A >> 4) & 4);\r
    }\r
    else if ((A & 0xFF00) == 0x5100)\r
    {\r
      Sync();\r
    }\r
    else if (A == 0x4020)\r
    {\r
      X6502_IRQEnd(FCEU_IQEXT);\r
      IRQCount&=0xFF00;\r
      IRQCount|=V;\r
    }\r
    else if (A == 0x4021)\r
    {\r
      X6502_IRQEnd(FCEU_IQEXT);\r
      IRQCount&=0xFF;\r
      IRQCount|=V<<8;\r
      IRQa = 1;\r
    }\r
    else if (A == 0x4025)\r
    {\r
      mirr = ((V & 8) >> 3) ^ 1;\r
    }\r
}\r
\r
static DECLFR(FDSRead4030)\r
{\r
  X6502_IRQEnd(FCEU_IQEXT);\r
  return X.IRQlow&FCEU_IQEXT?1:0;\r
}\r
\r
static void FP_FASTAPASS(1) UNL7017IRQ(int a)\r
{\r
 if(IRQa)\r
 {\r
  IRQCount-=a;\r
  if(IRQCount<=0)\r
  {\r
    IRQa=0;\r
    X6502_IRQBegin(FCEU_IQEXT);\r
  }\r
 }\r
}\r
\r
static void UNLKS7017Power(void)\r
{\r
  Sync();\r
  setchr8(0);\r
  setprg8r(0x10,0x6000,0);\r
  SetReadHandler(0x6000,0x7FFF,CartBR);\r
  SetWriteHandler(0x6000,0x7FFF,CartBW);\r
  SetReadHandler(0x8000,0xFFFF,CartBR);\r
  SetReadHandler(0x4030,0x4030,FDSRead4030);\r
  SetWriteHandler(0x4020,0x5FFF,UNLKS7017Write);\r
}\r
\r
static void UNLKS7017Close(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 UNLKS7017_Init(CartInfo *info)\r
{\r
  info->Power=UNLKS7017Power;\r
  info->Close=UNLKS7017Close;\r
  MapIRQHook=UNL7017IRQ;\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