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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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22 * Super Mario Bros 2 J alt version
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23 * as well as "Voleyball" FDS conversion, bank layot is similar but no bankswitching and CHR ROM present
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25 * mapper seems wrong researched by me ;( it should be mapper 43 modification
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30 static uint8 prg, IRQa;
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31 static uint16 IRQCount;
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33 static SFORMAT StateRegs[]=
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37 {&IRQCount, 2, "IRQC"},
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41 static void Sync(void)
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43 setprg4r(1,0x5000,1);
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44 setprg8r(1,0x6000,1);
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45 setprg32(0x8000,prg);
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49 static DECLFW(UNLSMB2JWrite)
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60 X6502_IRQEnd(FCEU_IQEXT);
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64 static void UNLSMB2JPower(void)
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68 SetReadHandler(0x5000,0x7FFF,CartBR);
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69 SetReadHandler(0x8000,0xFFFF,CartBR);
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70 SetWriteHandler(0x4020,0xffff,UNLSMB2JWrite);
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73 static void UNLSMB2JReset(void)
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79 static void FP_FASTAPASS(1) UNLSMB2JIRQHook(int a)
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84 if((IRQCount>>12)==IRQa)
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85 X6502_IRQBegin(FCEU_IQEXT);
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89 static void StateRestore(int version)
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94 void UNLSMB2J_Init(CartInfo *info)
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96 info->Reset=UNLSMB2JReset;
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97 info->Power=UNLSMB2JPower;
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98 MapIRQHook=UNLSMB2JIRQHook;
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99 GameStateRestore=StateRestore;
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100 AddExState(&StateRegs, ~0, 0, 0);
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