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.
- Record Length
- 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
- 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
- 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
- The data field contains the executable code,
memory‐loadable data or descriptive information to be transferred.
- A record containing data. The data is placed at the address
- 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.
Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
2009, 2010, 2011 Peter Miller
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