srec_tektronix(5) - Linux man page
Name
srec_tektronix - Tektronix hexadecimal file format
Description
The Tektronix hexadecimal file format is no longer very common. It serves a similar purpose to the Motorola and Intel formats, usually used to transfer data into EPROM programmers.
The Lines
- Most Tektronix hex files contain only Tektronix hex lines (see the next section), which always start with a slash ("/[rq]) character. There are only two types of lines - data lines and a termination line.
Data Lines
- Data lines have five fields: address, length, checksum 1, data and checksum 2. The lines always start with a slash ("/[rq]) character.
- Address
This is a 4 character (2 byte) address that specifies where the data in the record is to be loaded into memory.
- Data Length
- Address
- The data length field is a 2 character (1 byte) field that specifies the number of character pairs (bytes) in the data field. This field never has a value of zero.
- Checksum 1
- The checksum 1 field is a 2 character (1 byte) field. Its value is the 8-bit sum of the six 4-bit values which make up the address and length fields.
- Data
The data field contains character pairs (bytes); the number of character pairs (bytes) is indicated by the length field.
- Checksum 2
- The checksum 2 field is a 2 character (1 byte) field. Its value is the least significant byte of the sum of the all the 4-bit values of the data field.
Termination Line
- Termination lines have three fields: address, zero and checksum. The lines always start with a slash ("/[rq]) character.
- Address
This is a 4 character (2 byte) address that specifies where to begin execution.
Zero
The data length field is a 2 character (1 byte) field of value zero.
- Checksum
- Address
- The checksum 1 field is a 2 character (1 byte) field. Its value is the 8-bit sum of the six 4-bit values which make up the address and zero fields.
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 Tektronix hex file. It contains the data "Hello, World[rq] to be loaded at address 0.
-
/00000D0D48656C6C6F2C20576F726C640A52 /00000000
Copyright
srec_cat version 1.56
Copyright © 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.