srec_fastload - LSI Logic Fast Load file format

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-VERSionLicense' command. This is free software and you are welcome to redistribute it under certain conditions; for details use the 'srec_cat-VERSionLicense' command.

The FastLoad Format uses a compressed ASCII format that permits files to be downloaded in less than half the time taken for Motorola S‐records. The base‐64 encoding used is "A‐Za‐z0−9,.". The data is encoded in groups of 4 characters (3 bytes, 24 bits). The character '/' is used to introduce a special function. Special functions are: Annnnnn Defines an address. Bnn Define a single byte. Cnnnn Compare the checksums. The checksum is a simple positive 16‐bit sum, of the data bytes only. EAA Define the program's entry point. The address will be the current address as defined by the A command. (The AA number in this command is ignored.) This must be the last entry in the file. KAA Clear the checksum. (The AA number in this command is ignored.) Sname,X Define a symbol. The address of the symbol will be the current address as defined by the A command. Znn Clear a number of bytes. SizeMultiplier In general, binary data will expand in sized by approximately 1.4 times when represented with this format.

Here is an example LSI Logic Fast Load format file. It contains the data “Hello, World[rq] to be loaded at address 0. /AAAA SGVsbG8sIFdvcmxk/BAK/CARS/AAAA/EAA

Scott Finneran E‐Mail: scottfinneran@yahoo.com.au Peter Miller E‐Mail: pmiller@opensource.org.au Reference Manual SRecord srec_fastload(5)

srec_fastload - LSI Logic Fast Load file format