Path: utzoo!attcan!uunet!samsung!brutus.cs.uiuc.edu!wuarchive!decwrl!sgi!koontz@oregon.sgi.com
From: koontz@oregon.sgi.com (David Koontz)
Newsgroups: sci.electronics
Subject: Re: I-records, 8031
Message-ID: <49481@sgi.sgi.com>
Date: 1 Feb 90 20:40:03 GMT
References: <2454@cs-spool.calgary.UUCP>
Sender: koontz@oregon.sgi.com
Organization: Silicon Graphics, Inc., Mountain View, CA
Lines: 94

In article <2454@cs-spool.calgary.UUCP>, deraadt@cpsc.UCalgary.CA (Theo de Raadt) writes:
> I need information on how an intel record (like an srecord) is
> formatted.
> 
This was intended to take 68020 code in a unix environ, strip the
header off, and convert to ihex for making EPROMs. (easy to undo).

I checked the source and could find no copyright notice.

================
/* ihex.c  */
/* Intel hex code generating program, taken from prom.c - promdef.c
   written by A. Bechtolsheim in SAIL on SU-AI. C version by Andy Schneider.

	Takes input file specified as argv[1] and produces a file named
	'<inputfile>.hex'.  
 */

#include <stdio.h>
#include <strings.h>

#define STRING	"0123456789ABCDEF"
#define OUTHEX(fp,v) {putc(STRING[(v&0xf0)>>4],fp);putc(STRING[v&0x0f],fp);}
#define	OUTFRAME(fp,x)	{chksum+=x;OUTHEX(fp,x);}
#define BIGSTRING	100
#define DEFAULTSIZE	16384

main (argc,argv)
int argc;
char **argv;
{
char infile[BIGSTRING];
char name[BIGSTRING];
char *suffix = ".hex";
char	x;
int i,adrs,chksum;
long size  = DEFAULTSIZE;
FILE *input, *chan, *fopen();

    if (argc < 2) {
	fprintf (stderr,"No source file named\n");
	exit (0);
    }
    else{
	fprintf (stderr,"Source file %s\n",argv[1]);
    }
    if (argc > 2){
	
	size = atol(argv[2]);
	fprintf(stderr,"Specified Size: %x\n",size);
    }
    strncpy (infile,argv[1],10);
    strcpy (name,infile);
    strncat (name,suffix,4);	/* add dothex */
    printf ("Input filename: %s\n",infile);
    printf ("Output filename: %s\n",name);

	input = fopen(infile,"r");
	if (input == NULL)
	{
	    fprintf (stderr,"Can't open %s for read\n",infile);
	    exit (0);
	}
	chan = fopen(name,"w");
	if (chan == NULL)
	{
		fprintf(stderr,"Open failure on %s\n",name);
		exit (0);
	}
	for (i=0;i<32;i++)
	x = fgetc(input);	/* lets remove 32 byte unix header */
	for (adrs=0;adrs<= (size -1);adrs+=16)
	{
		putc(':',chan);		/* record mark field */
		chksum=0;		/* init checksum */
		OUTFRAME(chan,16);	/* record length = 16 */
		OUTFRAME(chan,(0xff&(adrs>>8)));
				/* load address field high order digit */
		OUTFRAME(chan,(adrs & 0xff));
				/* load address field low-order digit */
		OUTHEX(chan, 0);	/* record type = data */
		for (i=0;i<=15;i++) {
		    x = fgetc(input);
		    OUTFRAME(chan,x);
		}
		OUTHEX(chan,((-(chksum&0xff))&0xff));
			/* two's complement of the 8 bit sum of frames */
		putc('\n',chan);
	}
	fprintf(chan,":0000000000\n");
			/* final record: length=0, adrs=0, type=0, chk=0 */
	fclose(input);
	fclose(chan);
}