mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
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68 lines
3.0 KiB
C
68 lines
3.0 KiB
C
/***************************************************************************************
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* Genesis Plus
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* 68k bus arbitration
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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 (2007,2008,2009), 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 _MEM68K_H_
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#define _MEM68K_H_
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/* unused areas */
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extern unsigned int m68k_read_bus_8(unsigned int address);
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extern unsigned int m68k_read_bus_16(unsigned int address);
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extern void m68k_unused_8_w(unsigned int address, unsigned int data);
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extern void m68k_unused_16_w(unsigned int address, unsigned int data);
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/* illegal areas */
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extern unsigned int m68k_lockup_r_8(unsigned int address);
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extern unsigned int m68k_lockup_r_16(unsigned int address);
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extern void m68k_lockup_w_8(unsigned int address, unsigned int data);
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extern void m68k_lockup_w_16(unsigned int address, unsigned int data);
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/* eeprom */
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extern unsigned int eeprom_read_byte(unsigned int address);
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extern unsigned int eeprom_read_word(unsigned int address);
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extern void eeprom_write_byte(unsigned int address, unsigned int data);
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extern void eeprom_write_word(unsigned int address, unsigned int data);
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/* Z80 bus */
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extern unsigned int z80_read_byte(unsigned int address);
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extern unsigned int z80_read_word(unsigned int address);
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extern void z80_write_byte(unsigned int address, unsigned int data);
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extern void z80_write_word(unsigned int address, unsigned int data);
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/* I/O & Control registers */
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extern unsigned int ctrl_io_read_byte(unsigned int address);
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extern unsigned int ctrl_io_read_word(unsigned int address);
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extern void ctrl_io_write_byte(unsigned int address, unsigned int data);
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extern void ctrl_io_write_word(unsigned int address, unsigned int data);
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/* VDP */
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extern unsigned int vdp_read_byte(unsigned int address);
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extern unsigned int vdp_read_word(unsigned int address);
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extern void vdp_write_byte(unsigned int address, unsigned int data);
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extern void vdp_write_word(unsigned int address, unsigned int data);
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/* PICO */
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extern unsigned int pico_read_byte(unsigned int address);
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extern unsigned int pico_read_word(unsigned int address);
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#endif /* _MEM68K_H_ */
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