| 1 |
cebix |
1.1 |
/* |
| 2 |
|
|
* REU.h - 17xx REU emulation |
| 3 |
|
|
* |
| 4 |
cebix |
1.2 |
* Frodo (C) 1994-1997,2002-2003 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 |
|
|
#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 |
