53 lines
1.3 KiB
C
53 lines
1.3 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 bs, bss;
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static uint32 boop;
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static uint8 FP_FASTAPASS(2) Read(int w, uint8 ret) {
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if (w) {
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ret |= (bs & 1) << 3;
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ret |= (boop & 1) << 4;
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bs >>= 1;
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boop >>= 1;
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}
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return(ret);
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}
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static void FP_FASTAPASS(1) Write(uint8 V) {
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bs = bss;
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}
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static void FP_FASTAPASS(2) Update(void *data, int arg) {
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bss = *(uint8*)data;
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bss |= bss << 8;
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bss |= bss << 8;
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}
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static INPUTCFC TopRider = { Read, Write, 0, Update, 0, 0 };
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INPUTCFC *FCEU_InitTopRider(void) {
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return(&TopRider);
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}
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