srec_tektronix_extended - Tektronix Extended hexadecimal file format

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-VERSionLicense' command. This is free software and you are welcome to redistribute it under certain conditions; for details use the 'srec_cat-VERSionLicense' command.

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. TheLines 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. TheFields ┌───┬────────┬──────┬──────────┬─────────┬──────┐ │ % │ 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. RecordTypes 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. SizeMultiplier In general, binary data will expand in sized by approximately 2.5 times when represented with this format.

Here is an example Tektronix extended file. It contains the data “Hello, World” to be loaded at address 0x006B. %256D980000006B48656C6C6F2C20576F726C64210A %09819800000000

Scott Finneran E‐Mail: scottfinneran@yahoo.com.au Peter Miller E‐Mail: pmiller@opensource.org.au Reference Manual SRecord srec_tektronix_extended(5)

srec_tektronix_extended - Tektronix Extended hexadecimal file format