/**********************************************************************
 * file: rom_header.h
 * part#:
 * internal sequence#:
 *
 * This file contains the definition for the header of the
 * system ROM for Pisces
 *
 *	**************************************************************
 *	*     "(c)Copyright Hewlett-Packard Company, 1984.*  All     *
 *	*    rights are reserved.  Copying or other reproduction     *
 *	*    of this program except for archival purposes is         *
 *	*    prohibited without the prior written consent of         *
 *	*    Hewlett-Packard Company."				     *
 *	**************************************************************
 *
 *		Pisces Q-DOS project
 *		Jim Andreas
 *		-----------------------------------------------------
 *		initial					02/84	jra
 *
 ********************************************************************/

struct rom_header {
	long	*stack;	/* initial supervisor stack setting */
	int	(*reset)();	/* reset routine entry point */
	int	(*vector[46])(); /* execption routine vectors */

	long	unused;		/* unused */
	short	release;	/* rom release code */
	char	*data;		/* initialized data area in rom */
	char 	*target_data;	/* target in ram for init data */
	long	data_size;	/* size of init data area */
	char	*jumptable;	/* jump table in rom */
	char	*jumptable_target; /* target in ram for jmp table */
	long	jumptable_size;	/* size of jump table */
	char	*rom_disc;	/* base of rom disc in rom */
	long	rom_disc_size;	/* size of rom disc */
	char	reserved[128];	/* reserved, set to zero */
};

/*
 * definition of a Pisces external rom.
 *   This structure is present at the front end of an external
 * rom.  The checksum occupies the last four bytes of the rom.
 */
struct ext_rom_header {
	short	type;		/* Pisces rom identification */
	long	size;		/* size of the rom in bytes */
	char	*rom_disc;	/* pointer to the rom disc */
	long	rom_disc_size;	/* size of the rom disc */
	char	reserved[128];	/* reserved, set to zero */
};

#define SCAN_INCREMENT	0x1000
#ifdef RAMROM
#define INTERNAL_ROM_SIZE  0x40000
#define MAX_ROM_ADDR	  0x100000
#else
#define INTERNAL_ROM_SIZE  0x40000
#define MAX_ROM_ADDR      0x5FFFFF
#endif