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root/cebix/SIDPlayer/src/mem.cpp
Revision: 1.3
Committed: 2003-04-11T20:23:02Z (20 years, 10 months ago) by cebix
Branch: MAIN
Changes since 1.2: +1 -1 lines
Log Message:
- added support for Catweasel SID
- replay timing is now based on CIA timer value, removed replayfreq

File Contents

# User Rev Content
1 cebix 1.1 /*
2     * mem.cpp - Emulator memory management
3     *
4 cebix 1.3 * SIDPlayer (C) Copyright 1996-2003 Christian Bauer
5 cebix 1.1 *
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 "sys.h"
22    
23     #include <string.h>
24    
25     #ifndef __psx__
26     #include <errno.h>
27     #endif
28    
29     #include "mem.h"
30    
31    
32     // Memory area
33     uint8 ram[RAM_SIZE];
34    
35    
36     /*
37     * Init memory management
38     */
39    
40     void MemoryInit(void)
41     {
42     // Clear memory contents
43     MemoryClear();
44     }
45    
46    
47     /*
48     * Exit memory management
49     */
50    
51     void MemoryExit(void)
52     {
53     }
54    
55    
56     /*
57     * Clear memory contents
58     */
59    
60     void MemoryClear(void)
61     {
62     memset(ram, 0, RAM_SIZE - 0x2000);
63     memset(ram + 0xe000, 0x40, 0x2000); // Fill kernal ROM area with RTI
64     ram[1] = 7; // 6510 I/O port
65     ram[0x0314] = 0x31; // IRQ vector
66     ram[0x0315] = 0xea;
67     }