1srec_wilson(5) File Formats Manual srec_wilson(5)
2
6 srec_wilson - wilson file format
7
9 This is a mystery format, added to support a mysery EPROM loader used
10 by Alan Wilson <dvdsales@dvdlibrary.co.uk>
11 If you know the true name of this format, please let me know! It bears
13 a remarkable similarity to the Motorola S‐Record format, however I can
14 find no reference to a "compressed" Motorola format.
15 The Lines
17 Each line contains normal ASCII characters, and “high bit on[rq] char‐
18 acters, but the ASCII control characters are avoided (the high‐bit‐on
19 con characters are not avoided). Normal line termination characters
20 (CRLF or LF, depending on your system) are used.
21 The presence of high‐bit‐on characters makes this format unattractive
23 to send via email, as it must be wrapped as a binary attachment,
24 increasing its size.
25 In general, a single byte per byte is used to encode values, however
27 some values use two bytes, according to the following table:
28 Byte Value Encoding (1 or 2 chars)
30 0x00 .. 0x9F 0x40 .. 0xDF
31 0xA0 .. 0xAF 0x3A 0x30 .. 0x3A 0x3F
32 0xB0 .. 0xBF 0x3B 0x30 .. 0x3B 0x3F
33 0xC0 .. 0xCF 0x3C 0x30 .. 0x3C 0x3F
34 0xD0 .. 0xDF 0x3D 0x30 .. 0x3D 0x3F
35 oxE0 .. 0xFF 0xE0 .. 0xFF
36 The rest of this description, when refering to “bytes[rq] means byte
37 values encoded using the above table.
38 The Fields
40 Each line consists of 5 fields. These are the type field, length field,
41 address field, data field, and the checksum.
42 ┌─────┬───────────────┬─────────┬──────┬──────────┐
44 │Type │ Record Length │ Address │ Data │ Checksum │
45 └─────┴───────────────┴─────────┴──────┴──────────┘
46 Type The type field is a 1 character field that specifies whether
47 the record is data (0x43), or termination (0x47).
48 Record Length
50 The record length field is a 1 byte field that specifies the
51 number of bytes in the record, excluding the type and record
52 length fields.
53 Address This is a 4‐byte address that specifies where the data is to be
55 loaded into memory.
56 Data The data field contains the executable code, memory‐loadable
58 data or descriptive information to be transferred.
59 Checksum
61 The checksum is an 1‐byte field that represents the least sig‐
62 nificant byte of the one's complement of the sum of the values
63 represented by the bytes making up the length, address, and
64 data fields.
65 Record Types
67 0x43 (#)
68 A record containing data and the 4‐byte address at which the
69 data is to reside.
70 0x47 (')
72 A termination record. The address field may contain the 4‐byte
73 address of the instruction to which control is passed. There
74 is no data field.
75 Size Multiplier
77 In general, binary data will expand in sized by approximately 1.5 times
78 when represented with this format.
79
81 srec_cat version 1.55
82 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
83 2007, 2008, 2009, 2010 Peter Miller
84 The srec_cat program comes with ABSOLUTELY NO WARRANTY; for details use
86 the 'srec_cat -VERSion License' command. This is free software and you
87 are welcome to redistribute it under certain conditions; for details
88 use the 'srec_cat -VERSion License' command.
89
91 Peter Miller E‐Mail: pmiller@opensource.org.au
92 /\/\* WWW: http://miller.emu.id.au/pmiller/
93Reference Manual SRecord srec_wilson(5)