mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-12-29 04:31:49 +01:00
a4cfc2a77a
--------------- * improved VBLANK flag accuracy, as observed on real hardware. * improved DMA operations accuracy, writes are now performed on a scanline basis: fixes Gaiares (flickering title screen). * improved DMA Fill timing accuracy. * fixed DMA with bad code values: fixes Williams Arcade Classics (corrupted gfx after soft reset). * fixed horizontal resolution changes during HBLANK: fixes Bugs Bunny in Double Trouble (2nd stage). * fixed Vertical Counter in interlace mode 1, as observed on real hardware. * fixed horizontal border width, as observed on real hardware. * various code improvments & optimizations. [Core/Extra] --------------- * improved savestate format: added DMA, SVP, cartridge mapping & internal registers state informations * improved unlicensed ROM mappers emulation * added Chinese Fighters III mapper support * added Top Fighter mapper support * fixed Barver Battle Saga mapper support * fixed cartridge hardware soft-reset (Game Genie, SVP, ...) * fixed Game Genie registers byte reads
73 lines
2.9 KiB
C
73 lines
2.9 KiB
C
/****************************************************************************
|
|
* Genesis Plus
|
|
* Cartridge Hardware support
|
|
*
|
|
* Copyright (C) 2007, 2008, 2009, 2010 Eke-Eke (GCN/Wii port)
|
|
*
|
|
* Lots of protection mechanism have been discovered by Haze
|
|
* (http://haze.mameworld.info/)
|
|
*
|
|
* Realtec mapper has been figured out by TascoDeluxe
|
|
*
|
|
* 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 _CART_HW_H_
|
|
#define _CART_HW_H_
|
|
|
|
/* Lock-ON cartridge type */
|
|
#define TYPE_GG 0x01 /* Game Genie */
|
|
#define TYPE_AR 0x02 /* Action Replay (Pro) */
|
|
#define TYPE_SK 0x03 /* Sonic & Knuckles */
|
|
|
|
/* Cartridge extra hardware */
|
|
typedef struct
|
|
{
|
|
uint8 regs[4]; /* internal registers (R/W) */
|
|
uint32 mask[4]; /* registers address mask */
|
|
uint32 addr[4]; /* registers address */
|
|
uint16 realtec; /* realtec mapper */
|
|
uint16 bankshift; /* cartridge with bankshift mecanism reseted on soft-reset */
|
|
unsigned int (*time_r)(unsigned int address); /* !TIME signal ($a130xx) read handler */
|
|
void (*time_w)(unsigned int address, unsigned int data); /* !TIME signal ($a130xx) write handler */
|
|
unsigned int (*regs_r)(unsigned int address); /* cart hardware registers read handler */
|
|
void (*regs_w)(unsigned int address, unsigned int data); /* cart hardware registers write handler */
|
|
} T_CART_HW;
|
|
|
|
/* Cartridge type */
|
|
typedef struct
|
|
{
|
|
uint8 *rom; /* ROM data */
|
|
uint8 *base; /* ROM base (slot 0) */
|
|
uint32 romsize; /* ROM size */
|
|
uint32 mask; /* ROM mask */
|
|
uint8 lock_on; /* 1: Lock-On port */
|
|
uint8 jcart; /* 1: J-CART port */
|
|
T_CART_HW hw; /* Extra hardware */
|
|
} T_CART;
|
|
|
|
/* global variables */
|
|
extern T_CART cart;
|
|
|
|
/* Function prototypes */
|
|
extern void cart_hw_init();
|
|
extern void cart_hw_reset(int hard);
|
|
extern int cart_hw_context_save(uint8 *state);
|
|
extern int cart_hw_context_load(uint8 *state, char *version);
|
|
|
|
#endif
|
|
|
|
|