Motorola S-Record Format
Motorola S-records are an industry-standard format for transmitting
binary files to target systems and PROM programmers. LSI Logic have
extended this standard to include an S4-record containing an address
and a symbol.
The extended S-record standard is as follows:
S<type><length><address><data....><checksum>
S4<length><address><name>,<checksum>
Where:
- type
- is the record type. Where:
- 0
- starting record (optional)
- 1
- data record with 16-bit address
- 2
- data record with 24-bit address
- 3
- data record with 32-bit address
- 4
- symbol record (LSI extension)
- 5
- number of data records in preceeding block
- 6
- unused
- 7
- ending record for S3 records
- 8
- ending record for S2 records
- 9
- ending record for S1 records
- length
- is two hex characters. This defines the length of the record
in bytes (not characters). It includes the address field, the data
field, and the checksum field.
- address
- is 4, 6, or 8 characters. Corresponding to a 16-, 24-, or
32-bit address. The address field for S4 records is always
32 bits.
- data
- Are the data bytes. Each pair of hex characters represent
one byte in memory.
- name
- Is the symbol name. The symbol is terminated by a ','.
- checksum
- Is the one's complement of the 8-bit checksum.
Example
S0030000FC
.
.
S325000004403C0880018D08DD900000000011000026000000003C0880012508DC50C50000B401
S32500000460C50100B8C50200BCC50300C0C50400C4C50500C8C50600CCC50700D0C50800D4FA
S32500000480C50900D8C50A00DCC50B00E0C50C00E4C50D00E8C50E00ECC50F00F0C51000F49A
S325000004A0C51100F8C51200FCC5130100C5140104C5150108C516010CC5170110C518011434
.
.
S70500000000FA
The S0 record starts the file. The S3 records contain the data.
The S7 record contains the entry address and terminates the download.
Generating S-record files
Please use the objcopy program that comes with your mips tools for
generating S-record files.
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