Genesis-Plus-GX/core/loadrom.h

78 lines
3.4 KiB
C

/***************************************************************************************
* Genesis Plus
* ROM Loading Support
*
* Copyright (C) 1998-2003 Charles Mac Donald (original code)
* Copyright (C) 2007-2021 Eke-Eke (Genesis Plus GX)
*
* Redistribution and use of this code or any derivative works are permitted
* provided that the following conditions are met:
*
* - Redistributions may not be sold, nor may they be used in a commercial
* product or activity.
*
* - Redistributions that are modified from the original source must include the
* complete source code, including the source code for all components used by a
* binary built from the modified sources. However, as a special exception, the
* source code distributed need not include anything that is normally distributed
* (in either source or binary form) with the major components (compiler, kernel,
* and so on) of the operating system on which the executable runs, unless that
* component itself accompanies the executable.
*
* - Redistributions must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************************/
#ifndef _LOADROM_H_
#define _LOADROM_H_
#ifndef MAXROMSIZE
#define MAXROMSIZE 10485760
#endif
typedef struct
{
char consoletype[18]; /* Genesis or Mega Drive */
char copyright[18]; /* Copyright message */
char domestic[50]; /* Domestic name of ROM */
char international[50]; /* International name of ROM */
char ROMType[4]; /* Boot ROM (BR), Educational (AL) or Game (GM) program */
char product[14]; /* Product serial number */
unsigned short checksum; /* ROM Checksum (header) */
unsigned short realchecksum; /* ROM Checksum (calculated) */
unsigned int romstart; /* ROM start address */
unsigned int romend; /* ROM end address */
char country[18]; /* Country flag */
uint16 peripherals; /* Supported peripherals */
} ROMINFO;
/* Global variables */
extern ROMINFO rominfo;
extern uint8 romtype;
/* Function prototypes */
extern int load_bios(int system);
extern int load_rom(char *filename);
extern void get_region(char *romheader);
extern char *get_company(void);
extern char *get_peripheral(int index);
extern void getrominfo(char *romheader);
#endif /* _LOADROM_H_ */