67 lines
1.7 KiB
C
67 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., 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 MReal, MRet;
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static uint8 FP_FASTAPASS(2) MJ_Read(int w, uint8 ret) {
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if (w) {
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/* ret|=(MRet&1)<<1; */
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ret |= ((MRet & 0x80) >> 6) & 2;
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/* MRet>>=1; */
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#ifdef FCEUDEF_DEBUGGER
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if (!fceuindbg)
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#endif
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MRet <<= 1;
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}
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return(ret);
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}
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static void FP_FASTAPASS(1) MJ_Write(uint8 v) {
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/* 1: I-D7, J-D6, K-D5, L-D4, M-D3, Big Red-D2
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2: A-D7, B-D6, C-D5, D-D4, E-D3, F-D2, G-D1, H-D0
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3: Sel-D6, Start-D7, D5, D4, D3, D2, D1
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*/
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MRet = 0;
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v >>= 1;
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v &= 3;
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if (v == 3)
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MRet = (MReal >> 14) & 0x7F;
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else if (v == 2)
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MRet = MReal & 0xFF;
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else if (v == 1)
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MRet = (MReal >> 8) & 0x3F;
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}
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static void FP_FASTAPASS(2) MJ_Update(void *data, int arg) {
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MReal = *(uint32*)data;
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}
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static INPUTCFC Mahjong = { MJ_Read, MJ_Write, 0, MJ_Update, 0, 0 };
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INPUTCFC *FCEU_InitMahjong(void) {
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MReal = MRet = 0;
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return(&Mahjong);
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}
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