srec_fairchild(5)
NAME
srec_fairchild - Fairchild Fairbug file format
DESCRIPTION
The Fairchild Fairbug format has 8-byte records. A file begins with an
address record and ends with an end-of-file record.
There are three record types in this file format.
- Address records are of the form
- +--+------+
|S | nnnn | - indicating the address for the+following+data records.
- Data records are of the form
+--+------------------+---+
|X | ffffffffffffffff | c |- Each data record begins-with-an-X-and-always+-contains 8 data bytes. The ff characters are hexadecimal byte values (8 bytes). Each data byte is represented by 2 hexadecimal characters. The c character is a hex digit being the the nibble-sum of the data bytes. A 1-digit hexadecimal checksum follows the data in each data record. The checksum represents, in hexadecimal notation, the sum of the binary equivalents of the 16 digits in the record; the half carry from the fourth bit is ignored. The programmer ignores any character (except for address characters and the asterisk character, which terminates the data transfer) between a checksum and the start character of the next data record. This space can be used for comments.
- The end-of-file record has the form
+--+
|* |- The last record consists of an asterisk only, which indicates the end of file.
- Size Multiplier
- In general, binary data will expand in sized by approximately 2.4 times when represented with this format.
EXAMPLE
- Here is an example Fairchild Fairbug file. It contains the data
"Hello, World[rq] to be loaded at address 0x1000. Notice how the last
record is padded with 0xFF bytes.
- S1000
X48656C6C6F2C2057C
X6F726C64210AFFFF3
*
COPYRIGHT
srec_cat version 1.55
Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
2007, 2008, 2009, 2010 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.
AUTHOR
- Peter Miller E-Mail: pmiller@opensource.org.au
/\/\* WWW: http://miller.emu.id.au/pmiller/