52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
|
|
// Optional less-common simple mappers
|
|
|
|
// Nes_Emu 0.7.0. http://www.slack.net/~ant/
|
|
|
|
#pragma once
|
|
|
|
#include "Nes_Mapper.h"
|
|
|
|
/* Copyright (C) 2004-2006 Shay Green. This module is free software; you
|
|
can redistribute it and/or modify it under the terms of the GNU Lesser
|
|
General Public License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version. This
|
|
module 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 Lesser General Public License for
|
|
more details. You should have received a copy of the GNU Lesser General
|
|
Public License along with this module; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
|
|
|
|
#include "blargg_source.h"
|
|
|
|
// Jaleco/Konami/Taito
|
|
|
|
class Mapper087 : public Nes_Mapper {
|
|
uint8_t bank;
|
|
public:
|
|
Mapper087()
|
|
{
|
|
register_state( &bank, 1 );
|
|
}
|
|
|
|
void apply_mapping()
|
|
{
|
|
intercept_writes( 0x6000, 1 );
|
|
write( 0, 0x6000, bank );
|
|
}
|
|
|
|
bool write_intercepted( nes_time_t, nes_addr_t addr, int data )
|
|
{
|
|
if ( addr != 0x6000 )
|
|
return false;
|
|
|
|
bank = data;
|
|
set_chr_bank( 0, bank_8k, data >> 1 );
|
|
return true;
|
|
}
|
|
|
|
void write( nes_time_t, nes_addr_t, int ) { }
|
|
};
|
|
|