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https://github.com/dborth/fceugx.git
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75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2003 Xodnizel
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <string.h>
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#include "share.h"
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static uint32 FTVal,FTValR;
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static char side;
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static uint8 FP_FASTAPASS(2) FT_Read(int w, uint8 ret)
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{
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if(w)
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{
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ret|=FTValR;
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}
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return(ret);
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}
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static void FP_FASTAPASS(1) FT_Write(uint8 V)
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{
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FTValR=0;
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//printf("%08x\n",FTVal);
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if(!(V&0x1))
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FTValR=(FTVal>>8);
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else if(!(V&0x2))
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FTValR=(FTVal>>4);
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else if(!(V&0x4))
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FTValR=FTVal;
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FTValR=(~FTValR)&0xF;
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if(side=='B')
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FTValR=((FTValR&0x8)>>3) | ((FTValR&0x4)>>1) | ((FTValR&0x2)<<1) | ((FTValR&0x1)<<3);
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FTValR<<=1;
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}
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static void FP_FASTAPASS(2) FT_Update(void *data, int arg)
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{
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FTVal=*(uint32 *)data;
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}
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static INPUTCFC FamilyTrainer={FT_Read,FT_Write,0,FT_Update,0,0};
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INPUTCFC *FCEU_InitFamilyTrainerA(void)
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{
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side='A';
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FTVal=FTValR=0;
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return(&FamilyTrainer);
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}
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INPUTCFC *FCEU_InitFamilyTrainerB(void)
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{
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side='B';
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FTVal=FTValR=0;
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return(&FamilyTrainer);
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}
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