NAME
srec_ti_tagged - Texas Instruments Tagged (SDSMAC) file format
DESCRIPTION
This format is also known as the TITagged or TISDSMAC format.
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
Unlike many other object formats, the lines themselves are not
especially significant. The format consits of a number of tagged
fields, and lines are composed of a series of these fields.
Tag Description
---------------------------------
* Data byte.
: End of file.
0 File header (optional).
7 Checksum.
8 Dummy checksum (ignored).
9 Address.
B Data word.
F End of data record.
K Program identifier
(optional).
Data Byte
+--+---+---+
|B | n | n |
One byte of data. The nn is 8‐bit-big‐endian hexadecimal.
End of File
+--+------+
|: | CRLF |
The end of data is indicated by-this-tag. The end of line sequence (LF
on Unix systems, CRLF on PCs) follows this tag.
File Header
+--+--------+----------+
|0 | length | filename |
The optional start‐of‐file-record-begins-with-a+tag character (’0’) and
a 12‐character file header. The first four characters are the byte
count of the file data. The remaining 8 characters are the name of the
file and may be any ASCII characters, blank padded.
Checksum
+--+---+---+---+---+
|7 | n | n | n | n |
The checksum is the 2s complement+sum+of-+the+ 8‐bit ASCII values of
characters, beginning with the first tag character and ending with the
checksum tag character (7). The nnnn is 16‐bit big‐endian hexadecimal.
Dummy Checksum
+--+---+---+---+---+
|8 | n | n | n | n |
The checksum is the 2s+-complement-sum-of+the 8‐bit ASCII values of
characters, beginning with the first tag character and ending with the
checksum tag character (8). The nnnn is 16‐bit big‐endian hexadecimal.
Address
+--+---+---+---+---+
|9 | n | n | n | n |
Addresses may be given for+any-data-byte,+but+none is mandatory. The
file begins at 0000 if no address is given before the first data field.
The nnnn is 16‐bit big‐endian hexadecimal.
Data Word
+--+---+---+---+---+
|B | a | a | b | b |
Two bytes of data. The--aa--and-+bb-+are+ each 8‐bit big‐endian
hexadecimal.
End of Record
+--+------+
|F | CRLF |
The end of line sequence (LF+on+Unix-systems, CRLF on PCs) is escaped
using this tag. The checksum is reset to zero at this point.
Program Identifier
+--+---+---+---+---+------+
|K | n | n | n | n | text |
The program identifier+can-contain-a-brief-description of the program,
or can be empty (i.e. the text portion is optional). The nnnn length
(hex) of the field includes the ‘K’, the length and the text; it is at
least 5.
Size Multiplier
In general, binary data will expand in sized by approximately 2.9 times
when represented with this format.
EXAMPLE
Here is an example TI‐Tagged file. It contains the data “Hello,
World[rq] to be loaded at address 0x0100.
K000590080B4865B6C6CB6F2CB2057B6F72B6C64*0A7F648F
:
and here is another example from the reference below
00050 7FDD4F
90000BFFFFBFFFFBFFFFBFFFFBFFFFBFFFFBFFFFBFFFF7F400F
90010BFFFFBFFFFBFFFFBFFFFBFFFFBFFFFBFFFFBFFFF7F3FFF
90020BFFFFBFFFFBFFFFBFFFFBFFFFBFFFFBFFFFBFFFF7F3FEF
90030BFFFFBFFFFBFFFFBFFFFBFFFFBFFFFBFFFFBFFFF7F3FDF
90040BFFFFBFFFFBFFFFBFFFFBFFFFBFFFFBFFFFBFFFF7F3FCF
:
SEE ALSO
http://www.dataio.com/pdf/Manuals/Unifamily/981‐0014‐016.pdf (page
6‐33)
COPYRIGHT
srec_cat version 1.55
Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
2007, 2008, 2009, 2010 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.
AUTHOR
Peter Miller E‐Mail: pmiller@opensource.org.au
/\/\* WWW: http://miller.emu.id.au/pmiller/