---
name: "srec_tektronix_extended"
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_extended"
---

# srec\_tektronix\_extended(5)

Tektronix Extended hexadecimal file format

## NAME

srec\_tektronix\_extended - Tektronix Extended hexadecimal file format

## DESCRIPTION

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.

### The Lines

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.\

### The Fields

| | | | | | |
| --- | --- | --- | --- | --- | --- |
| `%` | Length | Type | Checksum | Address | Data |

- 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.

- Type

  The type field is a 1 character field that specifies whether the record is data (6) or termination (8).

- Checksum

  The checksum is an 2 character (1 byte) field that represents the sum of all the nibbles on the line, excluding the checksum.

- Address

  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 memory.

- Data

  The data field contains the executable code, memory‐loadable data or descriptive information to be transferred.\

### Record Types

- 6

  A record containing data. The data is placed at the address specified.

- 8

  A termination record. The address field may optionally contain the address of the instruction to which control is passed.  There is no data field.

### Size Multiplier

In general, binary data will expand in sized by approximately 2.5 times when represented with this format.\

## EXAMPLE

Here is an example Tektronix extended file. It contains the data “Hello, World” to be loaded at address 0x006B.

```
%256D980000006B48656C6C6F2C20576F726C64210A
%09819800000000
```

## 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 |