[fceu.git] / mappers / 204.c

/* FCE Ultra - NES/Famicom Emulator\r
 *\r
 * Copyright notice for this file:\r
 *  Copyright (C) 2003 CaH4e3\r
 *\r
 * This program is free software; you can redistribute it and/or modify\r
 * it under the terms of the GNU General Public License as published by\r
 * the Free Software Foundation; either version 2 of the License, or\r
 * (at your option) any later version.\r
 *\r
 * This program is distributed in the hope that it will be useful,\r
 * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
 * GNU General Public License for more details.\r
 *\r
 * You should have received a copy of the GNU General Public License\r
 * along with this program; if not, write to the Free Software\r
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA\r
 */\r
\r
#include "mapinc.h"\r
\r
static DECLFW(Mapper204_write)\r
{\r
 int tmp2=A&0x6;\r
 int tmp1=tmp2+((tmp2==0x6)?0:(A&1));\r
 MIRROR_SET((A>>4)&1);\r
 ROM_BANK16(0x8000,tmp1);\r
 ROM_BANK16(0xc000,tmp2+((tmp2==0x6)?1:(A&1)));\r
 VROM_BANK8(tmp1);\r
}\r
\r
void Mapper204_init(void)\r
{\r
 ROM_BANK32(~0);\r
 VROM_BANK8(~0);\r
 SetWriteHandler(0x8000,0xFFFF,Mapper204_write);\r
}\r
Commit	Line	Data
386f5371	1	/* FCE Ultra - NES/Famicom Emulator\r
	2	*\r
	3	* Copyright notice for this file:\r
	4	* Copyright (C) 2003 CaH4e3\r
	5	*\r
	6	* This program is free software; you can redistribute it and/or modify\r
	7	* it under the terms of the GNU General Public License as published by\r
	8	* the Free Software Foundation; either version 2 of the License, or\r
	9	* (at your option) any later version.\r
	10	*\r
	11	* This program is distributed in the hope that it will be useful,\r
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of\r
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
	14	* GNU General Public License for more details.\r
	15	*\r
	16	* You should have received a copy of the GNU General Public License\r
	17	* along with this program; if not, write to the Free Software\r
	18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\r
	19	*/\r
	20	\r
	21	#include "mapinc.h"\r
	22	\r
	23	static DECLFW(Mapper204_write)\r
	24	{\r
	25	int tmp2=A&0x6;\r
	26	int tmp1=tmp2+((tmp2==0x6)?0:(A&1));\r
	27	MIRROR_SET((A>>4)&1);\r
	28	ROM_BANK16(0x8000,tmp1);\r
	29	ROM_BANK16(0xc000,tmp2+((tmp2==0x6)?1:(A&1)));\r
	30	VROM_BANK8(tmp1);\r
	31	}\r
	32	\r
	33	void Mapper204_init(void)\r
	34	{\r
	35	ROM_BANK32(~0);\r
	36	VROM_BANK8(~0);\r
	37	SetWriteHandler(0x8000,0xFFFF,Mapper204_write);\r
	38	}\r