kopia lustrzana https://github.com/Jean-MarcHarvengt/MCUME
78 wiersze
1.9 KiB
C
Executable File
78 wiersze
1.9 KiB
C
Executable File
/*
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** Nofrendo (c) 1998-2000 Matthew Conte (matt@conte.com)
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**
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**
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** This program is free software; you can redistribute it and/or
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** modify it under the terms of version 2 of the GNU Library General
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** Public License as published by the Free Software Foundation.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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** Library General Public License for more details. To obtain a
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** copy of the GNU Library General Public License, write to the Free
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** Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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**
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** Any permitted reproduction of these routines, in whole or in part,
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** must bear this legend.
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**
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**
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** map93.c
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**
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** mapper 93 interface
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** $Id: map093.c,v 1.2 2001/04/27 14:37:11 neil Exp $
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*/
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#include "noftypes.h"
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#include "nes_mmc.h"
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#include "nes_ppu.h"
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static void map93_write(uint32 address, uint8 value)
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{
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UNUSED(address);
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/* ($8000-$FFFF) D7-D4 = switch $8000-$BFFF D0: mirror */
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mmc_bankrom(16, 0x8000, value >> 4);
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if (value & 1)
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ppu_mirror(0, 1, 0, 1); /* vert */
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else
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ppu_mirror(0, 0, 1, 1); /* horiz */
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}
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static const map_memwrite map93_memwrite[] =
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{
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{ 0x8000, 0xFFFF, map93_write },
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{ -1, -1, NULL }
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};
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const mapintf_t map93_intf =
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{
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93, /* mapper number */
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"Mapper 93", /* mapper name */
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NULL, /* init routine */
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NULL, /* vblank callback */
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NULL, /* hblank callback */
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NULL, /* get state (snss) */
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NULL, /* set state (snss) */
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NULL, /* memory read structure */
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map93_memwrite, /* memory write structure */
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NULL /* external sound device */
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};
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/*
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** $Log: map093.c,v $
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** Revision 1.2 2001/04/27 14:37:11 neil
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** wheeee
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**
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** Revision 1.1 2001/04/27 12:54:40 neil
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** blah
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**
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** Revision 1.1.1.1 2001/04/27 07:03:54 neil
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** initial
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**
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** Revision 1.1 2000/12/11 12:33:48 matt
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** initial revision
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**
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*/
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