[fceu.git] / mappers / 61.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 DECLFW(Mapper61_write)
{
// printf("$%04x:$%02x\n",A,V);
 switch(A&0x30)
 {
  case 0x00:
  case 0x30:
          ROM_BANK32(A&0xF);
          break;
  case 0x20:
  case 0x10:
          ROM_BANK16(0x8000,((A&0xF)<<1)| (((A&0x20)>>4)) );
          ROM_BANK16(0xC000,((A&0xF)<<1)| (((A&0x20)>>4)) );
          break;
 }
 #ifdef moo
 if(!(A&0x10))
  ROM_BANK32(A&0xF);
 else
 {
  ROM_BANK16(0x8000,((A&0xF)<<1)| (((A&0x10)>>4)^1) );
  ROM_BANK16(0xC000,((A&0xF)<<1)| (((A&0x10)>>4)^1) );
 }
 #endif
 MIRROR_SET((A&0x80)>>7);
}

void Mapper61_init(void)
{
 SetWriteHandler(0x8000,0xffff,Mapper61_write);
}
Commit	Line	Data
	1	/* FCE Ultra - NES/Famicom Emulator
	2	*
	3	* Copyright notice for this file:
	4	* Copyright (C) 2002 Xodnizel
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*/
	20
	21	#include "mapinc.h"
	22
	23
	24	static DECLFW(Mapper61_write)
	25	{
	26	// printf("$%04x:$%02x\n",A,V);
	27	switch(A&0x30)
	28	{
	29	case 0x00:
	30	case 0x30:
	31	ROM_BANK32(A&0xF);
	32	break;
	33	case 0x20:
	34	case 0x10:
	35	ROM_BANK16(0x8000,((A&0xF)<<1)\| (((A&0x20)>>4)) );
	36	ROM_BANK16(0xC000,((A&0xF)<<1)\| (((A&0x20)>>4)) );
	37	break;
	38	}
	39	#ifdef moo
	40	if(!(A&0x10))
	41	ROM_BANK32(A&0xF);
	42	else
	43	{
	44	ROM_BANK16(0x8000,((A&0xF)<<1)\| (((A&0x10)>>4)^1) );
	45	ROM_BANK16(0xC000,((A&0xF)<<1)\| (((A&0x10)>>4)^1) );
	46	}
	47	#endif
	48	MIRROR_SET((A&0x80)>>7);
	49	}
	50
	51	void Mapper61_init(void)
	52	{
	53	SetWriteHandler(0x8000,0xffff,Mapper61_write);
	54	}