---
name: "srec_tektronix"
section: "5"
platform: "linux"
package: "srecord"
version: "1.64-4.1+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/srec_tektronix"
---

# srec\_tektronix(5)

Tektronix hexadecimal file format

## 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 | Zero | Checksum |

- 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 1.64\
 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 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

| | | |
| --- | --- | --- |
| Scott Finneran | E‐Mail: | scottfinneran@yahoo.com.au |
| Peter Miller | E‐Mail: | pmiller@opensource.org.au |