mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
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63 lines
2.6 KiB
C
63 lines
2.6 KiB
C
/****************************************************************************
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* Genesis Plus
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* Cartridge Hardware support
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*
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* Copyright (C) 2007, 2008, 2009 Eke-Eke (GCN/Wii port)
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*
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* Lots of protection mechanism have been discovered by Haze
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* (http://haze.mameworld.info/)
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*
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* Realtec mapper has been figured out by TascoDeluxe
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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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#ifndef _CART_HW_H_
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#define _CART_HW_H_
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/* Lock-ON cartridge devices */
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#define NO_CART 0 /* no connections */
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#define CART_GG 1 /* game genie */
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#define CART_AR 2 /* action replay */
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#define CART_SK 3 /* Sonic & Knuckles */
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/* Hardware description */
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typedef struct
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{
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uint8 regs[4]; /* internal registers (R/W) */
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uint32 mask[4]; /* registers address mask */
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uint32 addr[4]; /* registers address */
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uint32 realtec; /* bit 0: realtec mapper detected, bit 1: bootrom enabled */
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uint32 bankshift; /* cartridge with bankshift mecanism */
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unsigned int (*time_r)(unsigned int address); /* !TIME signal ($a130xx) read handler */
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void (*time_w)(unsigned int address, unsigned int data); /* !TIME signal ($a130xx) write handler */
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unsigned int (*regs_r)(unsigned int address); /* cart hardware region ($400000-$7fffff) read handler */
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void (*regs_w)(unsigned int address, unsigned int data); /* cart hardware region ($400000-$7fffff) write handler */
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} T_CART_HW;
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/* global variables */
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extern T_CART_HW cart_hw;
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extern uint8 j_cart;
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extern uint8 *default_rom;
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extern int old_system[2];
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/* Function prototypes */
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extern void cart_hw_reset();
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extern void cart_hw_init();
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#endif
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