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 |
Length |
Checksum1 |
Data |
Checksum2 |
- 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
- 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
- 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 1.58
Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
2009, 2010, 2011 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¶