Provided by: srecord_1.64-4.1build1_amd64 

NAME
srec_ascii_hex - Ascii‐Hex file format
DESCRIPTION
This format is also known as the Ascii‐Space‐Hex or Ascii‐Hex‐Space format. If you know who invented
this format, please let me know. If you have a better or more complete description, I'd like to know
that, too.
The file starts with a start‐of‐text (STX or Control‐B) character (0x02). Everything before the STX is
ignored.
Each data byte is represented as 2 hexadecimal characters, followed by an "execution character". The
default execution character is a space, although many programs which write this format omit the space
character immediately preceding end‐of‐line.
The address for data bytes is set by using a sequence of $Annnn, characters, where nnnn is the
4‐character ascii representation of the address. The comma is required. There is no need for an address
record unless there are gaps. Implicitly, the file starts a address 0 if no address is set before the
first data byte.
The file ends with an end‐of‐text (ETX or Control‐C) character (0x03). Everything following the ETX is
ignored.
It is also possible to specify a running 16‐bit checksum using a sequence of $Snnnn, characters, although
this usually appears after the ETX character and is thus often ignored.
Variant Forms
In addition to a space character, the execution character can also be percent (%) called "ascii‐hex‐
percent" format, apostrophe (') or comma (,) called "ascii‐hex‐comma" format. The file must use the same
execution character throughout.
If the execution character is a comma, the address and checksum commands are terminated by a dot (.)
rather than a comma (,).
Size Multiplier
In general, binary data will expand in sized by approximately 3.0 times when represented with this
format.
EXAMPLE
Here is an example ascii‐hex file. It contains the data “Hello, World[rq] to be loaded at address
0x1000.
^B $A1000,
48 65 6C 6C 6F 2C 20 57 6F 72 6C 64 0A ^C
COPYRIGHT
srec_cat version 1.64
Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
2013, 2014 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.
MAINTAINER
Scott Finneran E‐Mail: scottfinneran@yahoo.com.au
Peter Miller E‐Mail: pmiller@opensource.org.au
Reference Manual SRecord srec_ascii_hex(5)