1  /*
 2  ** Nofrendo (c) 1998-2000 Matthew Conte (matt@conte.com)
 3  **
 4  **
 5  ** This program is free software; you can redistribute it and/or
 6  ** modify it under the terms of version 2 of the GNU Library General 
 7  ** Public License as published by the Free Software Foundation.
 8  **
 9  ** This program is distributed in the hope that it will be useful, 
10  ** but WITHOUT ANY WARRANTY; without even the implied warranty of
11  ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU 
12  ** Library General Public License for more details.  To obtain a 
13  ** copy of the GNU Library General Public License, write to the Free 
14  ** Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
15  **
16  ** Any permitted reproduction of these routines, in whole or in part,
17  ** must bear this legend.
18  **
19  **
20  ** map78.c
21  **
22  ** mapper 78 interface
23  ** $Id: map079.c,v 1.2 2001/04/27 14:37:11 neil Exp $
24  */
25  
26  #include "noftypes.h"
27  #include "nes_mmc.h"
28  
29  
30  /* mapper 79: NINA-03/06 */
31  static void map79_write(uint32 address, uint8 value)
32  {
33     if ((address & 0x5100) == 0x4100)
34     {
35        mmc_bankrom(32, 0x8000, (value >> 3) & 1);
36        mmc_bankvrom(8, 0x0000, value & 7);
37     }
38  }
39  
40  static void map79_init(void)
41  {
42     mmc_bankrom(32, 0x8000, 0);
43     mmc_bankvrom(8, 0x0000, 0);
44  }
45  
46  static const map_memwrite map79_memwrite[] =
47  {
48     { 0x4100, 0x5FFF, map79_write }, /* ????? incorrect range ??? */
49     {     -1,     -1, NULL }
50  };
51  
52  const mapintf_t map79_intf =
53  {
54     79, /* mapper number */
55     "NINA-03/06", /* mapper name */
56     map79_init, /* init routine */
57     NULL, /* vblank callback */
58     NULL, /* hblank callback */
59     NULL, /* get state (snss) */
60     NULL, /* set state (snss) */
61     NULL, /* memory read structure */
62     map79_memwrite, /* memory write structure */
63     NULL /* external sound device */
64  };
65  
66  /*
67  ** $Log: map079.c,v $
68  ** Revision 1.2  2001/04/27 14:37:11  neil
69  ** wheeee
70  **
71  ** Revision 1.1  2001/04/27 12:54:40  neil
72  ** blah
73  **
74  ** Revision 1.1.1.1  2001/04/27 07:03:54  neil
75  ** initial
76  **
77  ** Revision 1.1  2000/10/24 12:19:33  matt
78  ** changed directory structure
79  **
80  ** Revision 1.4  2000/10/22 19:17:47  matt
81  ** mapper cleanups galore
82  **
83  ** Revision 1.3  2000/10/21 19:33:38  matt
84  ** many more cleanups
85  **
86  ** Revision 1.2  2000/07/06 02:48:43  matt
87  ** clearly labelled structure members
88  **
89  ** Revision 1.1  2000/07/06 01:01:56  matt
90  ** initial revision
91  **
92  */