mirror of
https://github.com/dborth/fceugx.git
synced 2024-11-01 06:55:05 +01:00
114 lines
2.3 KiB
C
114 lines
2.3 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
|
|
*/
|
|
|
|
/* Not finished. Darn evil game... *Mumble*... */
|
|
|
|
#include "mapinc.h"
|
|
|
|
static uint8 cmd;
|
|
static uint8 regs[8];
|
|
|
|
static void DoPRG(void)
|
|
{
|
|
if(cmd&0x40)
|
|
{
|
|
setprg8(0xC000,regs[4]);
|
|
setprg8(0xA000,regs[5]);
|
|
setprg8(0x8000,~1);
|
|
setprg8(0xE000,~0);
|
|
}
|
|
else
|
|
{
|
|
setprg8(0x8000,regs[4]);
|
|
setprg8(0xA000,regs[5]);
|
|
setprg8(0xC000,~1);
|
|
setprg8(0xE000,~0);
|
|
}
|
|
}
|
|
|
|
static void DoCHR(void)
|
|
{
|
|
uint32 base=(cmd&0x80)<<5;
|
|
|
|
setchr2(0x0000^base,regs[0]);
|
|
setchr2(0x0800^base,regs[2]);
|
|
|
|
setchr1(0x1000^base,regs[6]);
|
|
setchr1(0x1400^base,regs[1]);
|
|
setchr1(0x1800^base,regs[7]);
|
|
setchr1(0x1c00^base,regs[3]);
|
|
}
|
|
|
|
static DECLFW(PWrite)
|
|
{
|
|
//printf("$%04x:$%02x\n",A,V);
|
|
}
|
|
|
|
static DECLFW(H2288Write)
|
|
{
|
|
//printf("$%04x:$%02x, $%04x\n",A,V,X.PC);
|
|
//FCEUI_DumpMem("dmp",0xc000,0xffff);
|
|
|
|
switch(A&0xE001)
|
|
{
|
|
case 0xa000:setmirror((V&1)^1);break;
|
|
case 0x8000:
|
|
cmd=V;DoPRG();DoCHR();break;
|
|
case 0x8001:regs[cmd&7]=V;
|
|
if((cmd&7)==4 || (cmd&7)==5)
|
|
DoPRG();
|
|
else
|
|
DoCHR();
|
|
break;
|
|
}
|
|
}
|
|
|
|
static DECLFR(H2288Read)
|
|
{
|
|
int bit;
|
|
//printf("Read: $%04x, $%04x\n",A,X.PC);
|
|
//DumpMem("out",0x8000,0xFFFF);
|
|
bit=(A&1)^1;
|
|
bit&=((A>>8)&1);
|
|
bit^=1;
|
|
return((X.DB&0xFE)|bit);
|
|
}
|
|
|
|
static void H2288Reset(void)
|
|
{
|
|
int x;
|
|
|
|
SetReadHandler(0x5000,0x5FFF,H2288Read);
|
|
SetReadHandler(0x8000,0xFFFF,CartBR);
|
|
SetWriteHandler(0x5000,0x5FFF,PWrite);
|
|
SetWriteHandler(0x8000,0xFFFF,H2288Write);
|
|
for(x=0;x<8;x++) regs[x]=0;
|
|
regs[4]=0;
|
|
regs[5]=1;
|
|
cmd=0;
|
|
DoPRG();
|
|
DoCHR();
|
|
}
|
|
|
|
void H2288_Init(CartInfo *info)
|
|
{
|
|
info->Power=H2288Reset;
|
|
}
|