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root/cebix/Frodo4/Src/REU.h
Revision: 1.4
Committed: 2005-06-27T19:55:48Z (19 years, 5 months ago) by cebix
Content type: text/plain
Branch: MAIN
CVS Tags: VERSION_4_2, HEAD
Changes since 1.3: +1 -1 lines
Log Message:
updated copyright dates

File Contents

# User Rev Content
1 cebix 1.1 /*
2     * REU.h - 17xx REU emulation
3     *
4 cebix 1.4 * Frodo (C) 1994-1997,2002-2005 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     #ifndef _REU_H
22     #define _REU_H
23    
24    
25     class MOS6510;
26     class Prefs;
27    
28     class REU {
29     public:
30     REU(MOS6510 *CPU);
31     ~REU();
32    
33     void NewPrefs(Prefs *prefs);
34     void Reset(void);
35     uint8 ReadRegister(uint16 adr);
36     void WriteRegister(uint16 adr, uint8 byte);
37     void FF00Trigger(void);
38    
39     private:
40     void open_close_reu(int old_size, int new_size);
41     void execute_dma(void);
42    
43     MOS6510 *the_cpu; // Pointer to 6510
44    
45     uint8 *ex_ram; // REU expansion RAM
46    
47     uint32 ram_size; // Size of expansion RAM
48     uint32 ram_mask; // Expansion RAM address bit mask
49    
50     uint8 regs[16]; // REU registers
51     };
52    
53     #endif