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root/cebix/Frodo4/Src/REU.h
Revision: 1.4
Committed: 2005-06-27T19:55:48Z (17 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

# Content
1 /*
2 * REU.h - 17xx REU emulation
3 *
4 * Frodo (C) 1994-1997,2002-2005 Christian Bauer
5 *
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