A
S-Record Format
This appendix explains the S-record format. Motorola created the S-record format so that
programs and data files could be encoded in a printable format. This allows for easier
transportation between computer systems. The S-record format makes it easier to monitor
the transport of the programs and files. Another benefit of the format is that it can be easily
edited.
This appendix contains the following sections:
? S-Record Content
? S-Record Types
? Creating S-records
? Example
S-Record Content
S-records are essentially character strings grouped into fields. An S-record consists of five
fields. The fields identify:
? the record type,
? the record length,
? a memory address,
? code or data, and
? a checksum.
Table A.1 explains the purpose of each field, and shows the number of possible characters
that can make up the field.
Table A.1 Description of S-Record Fields
Field
Type
Record Length
Printable
Characters
2
2
Contents
S-record type — such as S0, S1, etc.
Character pair count in the record,
excluding the type and record length
Freescale In-Circuit Emulator Base User Manual, Rev. 1.1
Freescale Semiconductor
75
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