fceux/input/toprider.cpp

63 lines
1.4 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <string.h>
#include "share.h"
static uint32 bs,bss;
static uint32 boop;
static uint8 FP_FASTAPASS(2) Read(int w, uint8 ret)
{
if(w)
{
ret|=(bs&1)<<3;
ret|=(boop&1)<<4;
bs>>=1;
boop>>=1;
// puts("Read");
}
return(ret);
}
static void FP_FASTAPASS(1) Write(uint8 V)
{
// if(V&0x2)
bs=bss;
//printf("Write: %02x\n",V);
// boop=0xC0;
}
static void FP_FASTAPASS(2) Update(void *data, int arg)
{
bss=*(uint8*)data;
bss|=bss<<8;
bss|=bss<<8;
}
static INPUTCFC TopRider={Read,Write,0,Update,0,0};
INPUTCFC *FCEU_InitTopRider(void)
{
return(&TopRider);
}