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https://github.com/ekeeke/Genesis-Plus-GX.git
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46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
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/***************************************************************************************
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* Genesis Plus
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* I/O controller (MD & MS compatibility modes)
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*
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Charles Mac Donald (original code)
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* Eke-Eke (2007-2011), additional code & fixes for the GCN/Wii port
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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****************************************************************************************/
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#ifndef _GEN_IO_H_
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#define _GEN_IO_H_
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#define REGION_JAPAN_NTSC 0x00
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#define REGION_JAPAN_PAL 0x40
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#define REGION_USA 0x80
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#define REGION_EUROPE 0xC0
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/* Global variables */
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extern uint8 io_reg[0x10];
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extern uint8 region_code;
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/* Function prototypes */
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extern void io_init(void);
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extern void io_reset(void);
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extern void io_68k_write(unsigned int offset, unsigned int data);
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extern unsigned int io_68k_read(unsigned int offset);
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extern void io_z80_write(unsigned int data);
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extern unsigned int io_z80_read(unsigned int offset);
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#endif /* _IO_H_ */
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