# srec_tektronix

NAME
DESCRIPTION
The Lines
Data Lines
Termination Line
Size Multiplier
EXAMPLE
COPYRIGHT
MAINTAINER

## 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

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 1.65
Copyright (C) 1998... 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.

## MAINTAINER