srec_tektronix_extended - Tektronix Extended hexadecimal file format
This format allows binary files to be uploaded and downloaded between
two computer systems, typically between a computer system (such as a
PC, Macintosh, or workstation) and an emulator or evaluation board for
microcontrollers and microprocessors.
Lines always start with a percent (%) character. Each line consists of
5 fields. These are the length field, the type field, the checksum,
the address field (including address length), and the data field.
|% | Length | Type | Checksum | Address | Data |
The record length field is a 2 character (1 byte) field that
specifies the number of characters (not bytes) in the record,
excluding the percent, the length field, the type field and the
Type The type field is a 1 character field that specifies whether
the record is data (6) or termination (8).
The checksum is an 2 character (1 byte) field that represents
the sum of all the nibbles on the line, excluding the checksum.
Address This is a 9 character field. The first character is the
address size; it is always 8. The remaining 8 chgaracters are
the 4‐byte address that specifies where the data is to be
loaded into memory.
Data The data field contains the executable code, memory‐loadable
data or descriptive information to be transferred.
6 A record containing data. The data is placed at the address
8 A termination record. The address field may optionally contain
the address of the instruction to which control is passed.
There is no data field.
In general, binary data will expand in sized by approximately 2.5 times
when represented with this format.
Here is an example Tektronix extended file. It contains the data
“Hello, World[rq] to be loaded at address 0x006B.
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.
Peter Miller E‐Mail: email@example.com
/\/\* WWW: http://miller.emu.id.au/pmiller/