mirror of
https://github.com/dborth/fceugx.git
synced 2024-11-05 00:45:06 +01:00
86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
|
/* FCE Ultra - NES/Famicom Emulator
|
||
|
|
*
|
||
|
|
* Copyright notice for this file:
|
||
|
|
* Copyright (C) 2002 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 <stdlib.h>
|
||
|
|
#include "share.h"
|
||
|
|
|
||
|
|
|
||
|
|
static char side;
|
||
|
|
static uint32 pprsb[2];
|
||
|
|
static uint32 pprdata[2];
|
||
|
|
|
||
|
|
static uint8 FP_FASTAPASS(1) ReadPP(int w)
|
||
|
|
{
|
||
|
|
uint8 ret=0;
|
||
|
|
ret|=((pprdata[w]>>pprsb[w])&1)<<3;
|
||
|
|
ret|=((pprdata[w]>>(pprsb[w]+8))&1)<<4;
|
||
|
|
if(pprsb[w]>=4)
|
||
|
|
{
|
||
|
|
ret|=0x10;
|
||
|
|
if(pprsb[w]>=8)
|
||
|
|
ret|=0x08;
|
||
|
|
}
|
||
|
|
if(!fceuindbg)
|
||
|
|
pprsb[w]++;
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void FP_FASTAPASS(1) StrobePP(int w)
|
||
|
|
{
|
||
|
|
pprsb[w]=0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void FP_FASTAPASS(3) UpdatePP(int w, void *data, int arg)
|
||
|
|
{
|
||
|
|
static const char shifttableA[12]={8,9,0,1,11,7,4,2,10,6,5,3};
|
||
|
|
static const char shifttableB[12]={1,0,9,8,2,4,7,11,3,5,6,10};
|
||
|
|
int x;
|
||
|
|
|
||
|
|
pprdata[w]=0;
|
||
|
|
|
||
|
|
if(side=='A')
|
||
|
|
for(x=0;x<12;x++)
|
||
|
|
pprdata[w]|=(((*(uint32 *)data)>>x)&1)<<shifttableA[x];
|
||
|
|
else
|
||
|
|
for(x=0;x<12;x++)
|
||
|
|
pprdata[w]|=(((*(uint32 *)data)>>x)&1)<<shifttableB[x];
|
||
|
|
}
|
||
|
|
|
||
|
|
static INPUTC PwrPadCtrl={ReadPP,0,StrobePP,UpdatePP,0,0};
|
||
|
|
|
||
|
|
static INPUTC *FCEU_InitPowerpad(int w)
|
||
|
|
{
|
||
|
|
pprsb[w]=pprdata[w]=0;
|
||
|
|
return(&PwrPadCtrl);
|
||
|
|
}
|
||
|
|
|
||
|
|
INPUTC *FCEU_InitPowerpadA(int w)
|
||
|
|
{
|
||
|
|
side='A';
|
||
|
|
return(FCEU_InitPowerpad(w));
|
||
|
|
}
|
||
|
|
|
||
|
|
INPUTC *FCEU_InitPowerpadB(int w)
|
||
|
|
{
|
||
|
|
side='B';
|
||
|
|
return(FCEU_InitPowerpad(w));
|
||
|
|
}
|