map034.c
2.44 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
/*
** Nofrendo (c) 1998-2000 Matthew Conte (matt@conte.com)
**
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of version 2 of the GNU Library General
** Public License as published by the Free Software Foundation.
**
** 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
** Library General Public License for more details. To obtain a
** copy of the GNU Library General Public License, write to the Free
** Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**
** Any permitted reproduction of these routines, in whole or in part,
** must bear this legend.
**
**
** map34.c
**
** mapper 34 interface
** $Id: map034.c,v 1.2 2001/04/27 14:37:11 neil Exp $
*/
#include <noftypes.h>
#include <nes_mmc.h>
static void map34_init(void)
{
mmc_bankrom(32, 0x8000, MMC_LASTBANK);
}
static void map34_write(uint32 address, uint8 value)
{
if ((address & 0x8000) || (0x7FFD == address))
{
mmc_bankrom(32, 0x8000, value);
}
else if (0x7FFE == address)
{
mmc_bankvrom(4, 0x0000, value);
}
else if (0x7FFF == address)
{
mmc_bankvrom(4, 0x1000, value);
}
}
static map_memwrite map34_memwrite[] =
{
{ 0x7FFD, 0xFFFF, map34_write },
{ -1, -1, NULL }
};
mapintf_t map34_intf =
{
34, /* mapper number */
"Nina-1", /* mapper name */
map34_init, /* init routine */
NULL, /* vblank callback */
NULL, /* hblank callback */
NULL, /* get state (snss) */
NULL, /* set state (snss) */
NULL, /* memory read structure */
map34_memwrite, /* memory write structure */
NULL /* external sound device */
};
/*
** $Log: map034.c,v $
** Revision 1.2 2001/04/27 14:37:11 neil
** wheeee
**
** Revision 1.1 2001/04/27 12:54:40 neil
** blah
**
** Revision 1.1.1.1 2001/04/27 07:03:54 neil
** initial
**
** Revision 1.1 2000/10/24 12:19:33 matt
** changed directory structure
**
** Revision 1.5 2000/10/22 19:17:46 matt
** mapper cleanups galore
**
** Revision 1.4 2000/10/21 19:33:38 matt
** many more cleanups
**
** Revision 1.3 2000/07/11 05:03:49 matt
** value masking isn't necessary for the banking routines
**
** Revision 1.2 2000/07/11 03:35:08 bsittler
** Fixes to make mikes new mappers compile.
**
** Revision 1.1 2000/07/11 03:14:18 melanson
** Initial commit for mappers 16, 34, and 231
**
**
*/