1 /* FCE Ultra - NES/Famicom Emulator
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3 * Copyright notice for this file:
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4 * Copyright (C) 2007 CaH4e3
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6 * This program is free software; you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation; either version 2 of the License, or
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9 * (at your option) any later version.
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11 * This program is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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16 * You should have received a copy of the GNU General Public License
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17 * along with this program; if not, write to the Free Software
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18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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23 static uint8 reg[8], cmd, IRQa;
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24 static int32 IRQCount;
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26 static SFORMAT StateRegs[]=
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31 {&IRQCount, 4, "IRQC"},
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35 static void Sync(void)
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37 setprg8(0x6000,reg[4]);
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38 setprg8(0x8000,reg[1]);
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39 setprg8(0xA000,reg[2]);
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40 setprg8(0xC000,reg[3]);
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45 static DECLFW(UNLKS7032Write)
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47 // FCEU_printf("bs %04x %02x\n",A,V);
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50 // case 0x8FFF: reg[4]=V; Sync(); break;
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51 case 0x8000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0x000F)|(V&0x0F); break;
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52 case 0x9000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0x00F0)|((V&0x0F)<<4); break;
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53 case 0xA000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0x0F00)|((V&0x0F)<<8); break;
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54 case 0xB000: X6502_IRQEnd(FCEU_IQEXT); IRQCount=(IRQCount&0xF000)|(V<<12); break;
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55 case 0xC000: X6502_IRQEnd(FCEU_IQEXT); IRQa=1; break;
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56 case 0xE000: cmd=V&7; break;
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57 case 0xF000: reg[cmd]=V; Sync(); break;
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61 static void UNLSMB2JIRQHook(int a)
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66 if(IRQCount>=0xFFFF)
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70 X6502_IRQBegin(FCEU_IQEXT);
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75 static void UNLKS7032Power(void)
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78 SetReadHandler(0x6000,0x7FFF,CartBR);
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79 SetReadHandler(0x8000,0xFFFF,CartBR);
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80 SetWriteHandler(0x4020,0xFFFF,UNLKS7032Write);
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83 static void StateRestore(int version)
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88 void UNLKS7032_Init(CartInfo *info)
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90 info->Power=UNLKS7032Power;
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91 MapIRQHook=UNLSMB2JIRQHook;
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92 GameStateRestore=StateRestore;
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93 AddExState(&StateRegs, ~0, 0, 0);
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