78 lines
3.4 KiB
C
78 lines
3.4 KiB
C
/***************************************************************************************
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* Genesis Plus
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* ROM Loading Support
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*
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* Copyright (C) 1998-2003 Charles Mac Donald (original code)
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* Copyright (C) 2007-2023 Eke-Eke (Genesis Plus GX)
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*
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* Redistribution and use of this code or any derivative works are permitted
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* provided that the following conditions are met:
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*
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* - Redistributions may not be sold, nor may they be used in a commercial
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* product or activity.
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*
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* - Redistributions that are modified from the original source must include the
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* complete source code, including the source code for all components used by a
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* binary built from the modified sources. However, as a special exception, the
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* source code distributed need not include anything that is normally distributed
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* (in either source or binary form) with the major components (compiler, kernel,
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* and so on) of the operating system on which the executable runs, unless that
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* component itself accompanies the executable.
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*
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* - Redistributions must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************************/
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#ifndef _LOADROM_H_
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#define _LOADROM_H_
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#ifndef MAXROMSIZE
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#define MAXROMSIZE 10485760
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#endif
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typedef struct
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{
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char consoletype[18]; /* Genesis or Mega Drive */
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char copyright[18]; /* Copyright message */
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char domestic[50]; /* Domestic name of ROM */
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char international[50]; /* International name of ROM */
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char ROMType[4]; /* Boot ROM (BR), Educational (AL) or Game (GM) program */
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char product[14]; /* Product serial number */
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unsigned short checksum; /* ROM Checksum (header) */
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unsigned short realchecksum; /* ROM Checksum (calculated) */
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unsigned int romstart; /* ROM start address */
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unsigned int romend; /* ROM end address */
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char country[18]; /* Country flag */
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uint16 peripherals; /* Supported peripherals */
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} ROMINFO;
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/* Global variables */
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extern ROMINFO rominfo;
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extern uint8 romtype;
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/* Function prototypes */
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extern int load_bios(int system);
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extern int load_rom(char *filename);
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extern void get_region(char *romheader);
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extern char *get_company(void);
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extern char *get_peripheral(int index);
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extern void getrominfo(char *romheader);
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#endif /* _LOADROM_H_ */
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