mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-11-09 04:15:14 +01:00
5b888e725b
improved cartridge structure added Lock-ON hardware emulation (Sonic & Knuckles) added cartridge ROM mirroring support (required for Lock-ON emulation)
45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
/***************************************************************************************
|
|
* Genesis Plus
|
|
* I/O Chip
|
|
*
|
|
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Charles Mac Donald (original code)
|
|
* Eke-Eke (2007,2008,2009), additional code & fixes for the GCN/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 _GEN_IO_H_
|
|
#define _GEN_IO_H_
|
|
|
|
#define REGION_JAPAN_NTSC 0x00
|
|
#define REGION_JAPAN_PAL 0x40
|
|
#define REGION_USA 0x80
|
|
#define REGION_EUROPE 0xC0
|
|
|
|
/* Global variables */
|
|
extern uint8 io_reg[0x10];
|
|
extern uint8 region_code;
|
|
extern int old_system[2];
|
|
|
|
/* Function prototypes */
|
|
extern void io_init(void);
|
|
extern void io_reset(void);
|
|
extern void io_write(uint32 offset, uint32 value);
|
|
extern uint32 io_read(uint32 offset);
|
|
|
|
#endif /* _IO_H_ */
|
|
|