/*
 * hex.h
 *
 * Header file for hex load/dump routines.
 *
 * Revision history:
 *
 * 11-Jul-1996: V-0.0; wrote definitions
 * 14-Jul-1996: V-0.1; created separate header file
 *
 * Copyright (C) 1996 David Tait.  All rights reserved.
 * Permission is granted to use, modify, or redistribute this software
 * so long as it is not sold or exploited for profit.
 *
 * THIS SOFTWARE IS PROVIDED AS IS AND WITHOUT WARRANTY OF ANY KIND,
 * EITHER EXPRESSED OR IMPLIED.
 *
 */

#ifndef __HEX_H
#define __HEX_H

#define NWORDS  8       /* dump this many words per hex record */

#define MAXPM   4096    /* max size of program memory */
#define MAXDM   64      /* max size of EEDATA memory */

#define UNKNOWN -1      /* hex formats */
#define INHX8M  0
#define INHX16  1

#define HE_EOF  -1      /* unexpected EOF */
#define HE_DEX  -2      /* hex digit required */
#define HE_CEX  -3      /* missing ':' */
#define HE_CHK  -4      /* checksum error */
#define HE_IGN  1       /* warning that some records were ignored */

#define SWAB(w) (((w)>>8) + (((w)&0xFF)<<8))    /* swap byte macro */

typedef unsigned short U16;      /* should be 2 bytes on most systems */

extern U16 progbuf[MAXPM];      /* program memory */
extern U16 databuf[MAXDM];      /* EEDATA memory */
extern U16 idbuf[4];            /* ID words */
extern U16 config;              /* config word */
extern int pmlast;              /* last program memory address loaded */
extern int dmlast;              /* last EEDATA memory address loaded */
extern int id;          /* base address of ID if loaded, 0 otherwise */
extern int cf;          /* base address of config if loaded, 0 otherwise */
extern int format;      /* determines load/dump style */

int loadhex(FILE *fp, int psize, int dsize, int ibase, int cbase, int dbase);
void dumphex(FILE *fp, int psize, int dsize, int ibase, int cbase, int dbase);
void erasehex(int psize, int dsize, int ws);
char *errhex(int e);

#endif /* __HEX_H */