Date   : Wed, 30 Sep 1987 14:10:10 PDT
From   : blc@VLSI.JPL.NASA.GOV
Subject: Re : Details of Intel Hex Format

The problem of the PROmM programmer which wouldn't accept home grown
Hex files in my case turned out to be the lack of an end of file
record (record type 01.) I had an "unload" program which took a binary
file and generated a hex file from it. When I sent it to the PROM
programmer, the whole thing locked up. It turned out that until it
saw the EOF record, the programmer still wanted more data. The solution
was to add the following line to the file:

:00000001ff

and everybody was happy.

         Bruce Conroy
         BLC@JPL-VLSI.ARPA