smsplus-gx/source/sms.h

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/******************************************************************************
* Sega Master System / GameGear Emulator
* Copyright (C) 1998-2007 Charles MacDonald
*
* additionnal code by Eke-Eke (SMS Plus GX)
*
* 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
*
* Sega Master System console emulation
*
******************************************************************************/
#ifndef SMS_H_
#define SMS_H_
#define CYCLES_PER_LINE 228
enum {
SLOT_BIOS = 0,
SLOT_CARD = 1,
SLOT_CART = 2,
SLOT_EXP = 3
};
enum {
MAPPER_NONE = 0,
MAPPER_SEGA = 1,
MAPPER_CODIES = 2,
MAPPER_KOREA = 3,
MAPPER_KOREA_MSX = 4,
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MAPPER_4PAK = 5
};
enum {
DISPLAY_NTSC = 0,
DISPLAY_PAL = 1
};
enum {
FPS_NTSC = 60,
FPS_PAL = 50
};
enum {
CLOCK_NTSC = 3579545,
CLOCK_PAL = 3546895,
CLOCK_NTSC_SMS1 = 3579527
};
enum {
CONSOLE_COLECO = 0x10,
CONSOLE_SG1000 = 0x11,
CONSOLE_SC3000 = 0x12,
CONSOLE_SF7000 = 0x13,
CONSOLE_SORDM5 = 0x14,
CONSOLE_SMS = 0x20,
CONSOLE_SMS2 = 0x21,
CONSOLE_GG = 0x40,
CONSOLE_GGMS = 0x41,
CONSOLE_MD = 0x80,
CONSOLE_MDPBC = 0x81,
CONSOLE_GEN = 0x82,
CONSOLE_GENPBC = 0x83
};
#define HWTYPE_TMS CONSOLE_COLECO
#define HWTYPE_SMS CONSOLE_SMS
#define HWTYPE_GG CONSOLE_GG
#define HWTYPE_MD CONSOLE_MD
#define IS_TMS (sms.console & HWTYPE_TMS)
#define IS_SMS (sms.console & HWTYPE_SMS)
#define IS_GG (sms.console & HWTYPE_GG)
#define IS_MD (sms.console & HWTYPE_MD)
enum {
TERRITORY_DOMESTIC = 0,
TERRITORY_EXPORT = 1
};
/* SMS context */
typedef struct
{
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struct
{
uint8_t pdr; /* Parallel data register */
uint8_t ddr; /* Data direction register */
uint8_t txdata; /* Transmit data buffer */
uint8_t rxdata; /* Receive data buffer */
uint8_t sctrl; /* Serial mode control and status */
} sio;
uint8_t wram[0x2000];
uint8_t paused;
uint8_t save;
uint8_t territory;
uint8_t console;
uint8_t display;
uint8_t glasses_3d;
uint8_t hlatch;
uint8_t memctrl;
uint8_t ioctrl;
uint8_t irq;
uint8_t device[2];
uint8_t gun_offset;
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uint32_t fm_detect;
int32_t use_fm;
} sms_t;
/* BIOS ROM */
typedef struct
{
uint8_t *rom;
uint8_t enabled;
/* We need to use an unsigned short for pages, as Bad Apple SMS requires it !*/
uint16_t pages;
uint8_t fcr[4];
} bios_t;
typedef struct
{
uint8_t *rom;
/* We need to use an unsigned short for pages, as Bad Apple SMS requires it !*/
uint16_t pages;
uint8_t *fcr;
uint8_t mapper;
} slot_t;
typedef struct
{
uint8_t rom[0x2000]; /* BIOS ROM */
uint8_t pio_mode; /* PIO mode */
uint8_t keypad[2]; /* Keypad inputs */
} t_coleco;
/* Global data */
extern sms_t sms;
extern bios_t bios;
extern slot_t slot;
extern t_coleco coleco;
extern uint8_t dummy_write[0x400];
extern uint8_t dummy_read[0x400];
/* Function prototypes */
extern void sms_init(void);
extern void sms_reset(void);
extern void sms_shutdown(void);
extern void mapper_reset(void);
extern void mapper_8k_w(uint16_t address, uint8_t data);
extern void mapper_16k_w(uint16_t address, uint8_t data);
extern int32_t sms_irq_callback(int32_t param);
#endif /* _SMS_H_ */