1srec_tektronix(5)             File Formats Manual            srec_tektronix(5)
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NAME

6       srec_tektronix - Tektronix hexadecimal file format
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DESCRIPTION

9       The  Tektronix  hexadecimal  file  format is no longer very common.  It
10       serves a similar purpose to the Motorola  and  Intel  formats,  usually
11       used to transfer data into EPROM programmers.
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13   The Lines
14       Most Tektronix hex files contain only Tektronix hex lines (see the next
15       section), which always start with a slash (``/'') character.  There are
16       only two types of lines - data lines and a termination line.
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18   Data Lines
19       Data  lines  have  five  fields:  address, length, checksum 1, data and
20       checksum 2.  The lines always start with a slash (``/'') character.
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22                ┌──┬─────────┬────────┬───────────┬──────┬───────────┐
23                │/ │ Address │ Length │ Checksum1 │ Data │ Checksum2 │
24                └──┴─────────┴────────┴───────────┴──────┴───────────┘
25       Address This is a 4 character (2 byte) address that specifies where the
26               data in the record is to be loaded into memory.
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28       Data Length
29               The  data  length  field  is  a 2 character (1 byte) field that
30               specifies the number of character pairs  (bytes)  in  the  data
31               field.  This field never has a value of zero.
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33       Checksum 1
34               The  checksum  1  field  is  a 2 character (1 byte) field.  Its
35               value is the 8-bit sum of the six 4-bit values  which  make  up
36               the address and length fields.
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38       Data    The  data field contains character pairs (bytes); the number of
39               character pairs (bytes) is indicated by the length field.
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41       Checksum 2
42               The checksum 2 field is a 2  character  (1  byte)  field.   Its
43               value  is  the least significant byte of the sum of the all the
44               4-bit values of the data field.
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46   Termination Line
47       Termination lines have three fields: address, zero and  checksum.   The
48       lines always start with a slash (``/'') character.
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50                           ┌──┬─────────┬──────┬──────────┐
51                           │/ │ Address │ Zero │ Checksum │
52                           └──┴─────────┴──────┴──────────┘
53       Address This  is a 4 character (2 byte) address that specifies where to
54               begin execution.
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56       Zero    The data length field is a 2 character (1 byte) field of  value
57               zero.
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59       Checksum
60               The  checksum  1  field  is  a 2 character (1 byte) field.  Its
61               value is the 8-bit sum of the six 4-bit values  which  make  up
62               the address and zero fields.
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64   Size Multiplier
65       In general, binary data will expand in sized by approximately 2.4 times
66       when represented with this format.
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EXAMPLE

69       Here is an example Tektronix hex file.  It contains the  data  ``Hello,
70       World'' to be loaded at address 0.
71              /00000D0D48656C6C6F2C20576F726C640A52
72              /00000000
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75       srec_cat version 1.35
76       Copyright  (C)  1998,  1999,  2000, 2001, 2002, 2003, 2004, 2005, 2006,
77       2007 Peter Miller
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79       The srec_cat program comes with ABSOLUTELY NO WARRANTY; for details use
80       the 'srec_cat -VERSion License' command.  This is free software and you
81       are welcome to redistribute it under certain  conditions;  for  details
82       use the 'srec_cat -VERSion License' command.
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AUTHOR

85       Peter Miller   E-Mail:   millerp@canb.auug.org.au
86       /\/\*             WWW:   http://www.canb.auug.org.au/~millerp/
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90Reference Manual                    SRecord                  srec_tektronix(5)
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