69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/* FCE Ultra - NES/Famicom Emulator
|
|
*
|
|
* Copyright notice for this file:
|
|
* Copyright (C) 2003 Xodnizel
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include "share.h"
|
|
|
|
static uint32 FTVal, FTValR;
|
|
static char side;
|
|
|
|
static uint8 FP_FASTAPASS(2) FT_Read(int w, uint8 ret) {
|
|
if (w) {
|
|
ret |= FTValR;
|
|
}
|
|
return(ret);
|
|
}
|
|
|
|
static void FP_FASTAPASS(1) FT_Write(uint8 V) {
|
|
FTValR = 0;
|
|
|
|
if (!(V & 0x1))
|
|
FTValR = (FTVal >> 8);
|
|
else if (!(V & 0x2))
|
|
FTValR = (FTVal >> 4);
|
|
else if (!(V & 0x4))
|
|
FTValR = FTVal;
|
|
|
|
FTValR = (~FTValR) & 0xF;
|
|
if (side == 'B')
|
|
FTValR = ((FTValR & 0x8) >> 3) | ((FTValR & 0x4) >> 1) | ((FTValR & 0x2) << 1) | ((FTValR & 0x1) << 3);
|
|
FTValR <<= 1;
|
|
}
|
|
|
|
static void FP_FASTAPASS(2) FT_Update(void *data, int arg) {
|
|
FTVal = *(uint32*)data;
|
|
}
|
|
|
|
static INPUTCFC FamilyTrainer = { FT_Read, FT_Write, 0, FT_Update, 0, 0 };
|
|
|
|
INPUTCFC *FCEU_InitFamilyTrainerA(void) {
|
|
side = 'A';
|
|
FTVal = FTValR = 0;
|
|
return(&FamilyTrainer);
|
|
}
|
|
|
|
INPUTCFC *FCEU_InitFamilyTrainerB(void) {
|
|
side = 'B';
|
|
FTVal = FTValR = 0;
|
|
return(&FamilyTrainer);
|
|
}
|
|
|