Provided by: srecord_1.39-1_i386
srec_dec_binary - DEC Binary (XXDP) file format
The DEC Binary (XXDP) format was used on the PDP 11 series machines.
This is a binary format, and is not readable or editable with a text
editor. The file consists of records of the form
|type | length | address | ...data... | checksum |
The field are-defined-as-follows:---+------------+----------+
type Two byte little-endian value. Must always be 1.
length Two byte little-endian value. This is the number of bytes in
the data, plus six.
address Two byte little-endian value. This is the load address of the
data The data is simple raw bytes. There are (length-6) of them.
The checcksum is a single byte. It is the negative of the
simple summ of all the header and data bytes.
If the record length is exactly 6 (i.e. no data), this is the start
address record, indicating the transfer address.
In addition there may be NUL padding characters between records. It is
common for records to be padded so that they start on even byte
boundaries. In the days of paper tape, it was common for the file to
have many leading NULs, to generate blank leader on the tape.
In general, raw binary data will expand in sized by approximately 1.03
times when represented with this format.
srec_cat version 1.39
Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
2007, 2008 Peter Miller
The srec_cat program comes with ABSOLUTELY NO WARRANTY; for details use
the ’srec_cat -VERSion License’ command. This is free software and you
are welcome to redistribute it under certain conditions; for details
use the ’srec_cat -VERSion License’ command.
Peter Miller E-Mail: firstname.lastname@example.org
/\/\* WWW: http://www.canb.auug.org.au/~millerp/