mirror of
https://github.com/dborth/fceugx.git
synced 2024-11-02 15:35:05 +01:00
118 lines
2.4 KiB
C
118 lines
2.4 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 "mapinc.h"
|
|
|
|
static uint8 cmd;
|
|
static uint8 DRegs[8];
|
|
static SFORMAT StateRegs[]=
|
|
{
|
|
{&cmd, 1, "CMD"},
|
|
{DRegs, 8, "DREG"},
|
|
{0}
|
|
};
|
|
|
|
static void Sync(void)
|
|
{
|
|
setprg32(0x8000,(DRegs[0]<<4)|(DRegs[1]&0xF));
|
|
setchr8(0);
|
|
}
|
|
|
|
static void StateRestore(int version)
|
|
{
|
|
Sync();
|
|
}
|
|
|
|
static DECLFW(Write)
|
|
{
|
|
switch (A&0x7300)
|
|
{
|
|
case 0x5100: DRegs[0]=V; Sync(); break;
|
|
case 0x5000: DRegs[1]=V; Sync(); break;
|
|
}
|
|
}
|
|
|
|
static DECLFW(Write2)
|
|
{
|
|
// FCEU_printf("bs %04x %02x\n",A,V);
|
|
switch (A&0x7300)
|
|
{
|
|
case 0x5200: DRegs[0]=V; Sync(); break;
|
|
case 0x5000: DRegs[1]=V; Sync(); break;
|
|
}
|
|
}
|
|
|
|
static uint8 WRAM[8192];
|
|
static DECLFR(AWRAM)
|
|
{
|
|
return(WRAM[A-0x6000]);
|
|
}
|
|
|
|
static DECLFW(BWRAM)
|
|
{
|
|
WRAM[A-0x6000]=V;
|
|
}
|
|
|
|
static void Power(void)
|
|
{
|
|
memset(DRegs,0,8);
|
|
DRegs[1]=0xFF;
|
|
cmd=0;
|
|
SetReadHandler(0x8000,0xFFFF,CartBR);
|
|
SetWriteHandler(0x4020,0x5FFF,Write);
|
|
SetReadHandler(0x6000,0x7FFF,AWRAM);
|
|
SetWriteHandler(0x6000,0x7FFF,BWRAM);
|
|
Sync();
|
|
}
|
|
|
|
static void M163HB(void)
|
|
{
|
|
if(scanline==127&&DRegs[1]&0x80)
|
|
setchr4(0x0000,1);
|
|
}
|
|
|
|
|
|
static void Power2(void)
|
|
{
|
|
memset(DRegs,0,8);
|
|
DRegs[1]=0xFF;
|
|
cmd=0;
|
|
SetReadHandler(0x8000,0xFFFF,CartBR);
|
|
SetWriteHandler(0x4020,0x5FFF,Write2);
|
|
SetReadHandler(0x6000,0x7FFF,AWRAM);
|
|
SetWriteHandler(0x6000,0x7FFF,BWRAM);
|
|
Sync();
|
|
}
|
|
|
|
void Mapper164_Init(CartInfo *info)
|
|
{
|
|
info->Power=Power;
|
|
GameStateRestore=StateRestore;
|
|
AddExState(&StateRegs, ~0, 0, 0);
|
|
}
|
|
|
|
void Mapper163_Init(CartInfo *info)
|
|
{
|
|
info->Power=Power2;
|
|
GameHBIRQHook=M163HB;
|
|
GameStateRestore=StateRestore;
|
|
AddExState(&StateRegs, ~0, 0, 0);
|
|
}
|