mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-11-05 10:25:07 +01:00
72 lines
2.8 KiB
C
72 lines
2.8 KiB
C
/***************************************************************************************
|
|
* Genesis Plus 1.2a
|
|
* 68k memory handlers
|
|
*
|
|
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Charles Mac Donald (original code)
|
|
* modified by Eke-Eke (compatibility fixes & additional code), GC/Wii port
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
****************************************************************************************/
|
|
|
|
#ifndef _MEM68K_H_
|
|
#define _MEM68K_H_
|
|
|
|
/* unused areas */
|
|
extern uint32 m68k_read_bus_8(uint32 address);
|
|
extern uint32 m68k_read_bus_16(uint32 address);
|
|
extern void m68k_unused_8_w (uint32 address, uint32 data);
|
|
extern void m68k_unused_16_w (uint32 address, uint32 data);
|
|
|
|
/* illegal areas */
|
|
extern uint32 m68k_lockup_r_8 (uint32 address);
|
|
extern uint32 m68k_lockup_r_16 (uint32 address);
|
|
extern void m68k_lockup_w_8 (uint32 address, uint32 data);
|
|
extern void m68k_lockup_w_16 (uint32 address, uint32 data);
|
|
|
|
/* eeprom */
|
|
extern uint32 eeprom_read_byte(uint32 address);
|
|
extern uint32 eeprom_read_word(uint32 address);
|
|
extern void eeprom_write_byte(uint32 address, uint32 data);
|
|
extern void eeprom_write_word(uint32 address, uint32 data);
|
|
|
|
/* Z80 bus */
|
|
extern uint32 z80_read_byte(uint32 address);
|
|
extern uint32 z80_read_word(uint32 address);
|
|
extern void z80_write_byte(uint32 address, uint32 data);
|
|
extern void z80_write_word(uint32 address, uint32 data);
|
|
|
|
/* I/O & Control registers */
|
|
extern uint32 ctrl_io_read_byte(uint32 address);
|
|
extern uint32 ctrl_io_read_word(uint32 address);
|
|
extern void ctrl_io_write_byte(uint32 address, uint32 data);
|
|
extern void ctrl_io_write_word(uint32 address, uint32 data);
|
|
|
|
/* VDP */
|
|
extern uint32 vdp_read_byte(uint32 address);
|
|
extern uint32 vdp_read_word(uint32 address);
|
|
extern void vdp_write_byte(uint32 address, uint32 data);
|
|
extern void vdp_write_word(uint32 address, uint32 data);
|
|
|
|
/* PICO */
|
|
extern uint32 pico_read_byte(uint32 address);
|
|
extern uint32 pico_read_word(uint32 address);
|
|
|
|
uint8 m68k_readmap[256];
|
|
uint8 m68k_writemap[256];
|
|
uint32 pico_current;
|
|
|
|
#endif /* _MEM68K_H_ */
|