1srec_trs80(5)                 File Formats Manual                srec_trs80(5)
2
3
4

NAME

6       srec_trs80 - Radio Shack TRS‐80 object file format specification
7

DESCRIPTION

9       This document describes the binary object file format for the Z80‐based
10       Radio Shack TRS‐80 microcomputers, such as the Model I, II, III, 4, 4D,
11       and  4P.   The  binary  format  is  generated  by the disk‐based Assem‐
12       bler/Editor, and used for TRS‐DOS program files.
13
14       The object file is blocked into records, each  of  which  contains  the
15       record  type,  length,  and  payload  data.   For  Data and End of File
16       records, the payload starts with two bytes of address in  little‐endian
17       format.   There  are  four main types of records that are defined.  The
18       record types are:
19
20       · Data Record
21
22       · End of File Record with Execution Transfer
23
24       · End of File Record without Execution Transfer
25
26       · Comment
27
28       · Start Linear Address Record (32‐bit format only)
29
30   General Record Format
31       ┌────────┬─────────┬─────────┬─────────┐
32       │Record  │ Record  │ Load    │ Data    │
33       │Type    │ Length  │ Address │         │
34       └────────┴─────────┴─────────┴─────────┘
35       Record Type.
36               Each record begins with a single byte Record Type  field  which
37               specifies  the  record  type  of  this record.  The Record Type
38               field is used to interpret the remaining information within the
39               record.  This field is one byte, represented as two hexadecimal
40               characters.  The encoding for all the current record types are:
41
42               1  Data Record
43
44               2  End of File Record with Execution Transfer
45
46               3  End of File Record without Execution Transfer
47
48               5  Comment Record
49
50       Record Length
51               Each record has a single byte Record Length field which  speci‐
52               fies  the  number of bytes of information or data which follows
53               the Record Length field of the record.  The  maximum  value  of
54               the  Record  Length  field  is hexadecimal “FF” or 255.  In the
55               case of Data Records only, Record Length byte values of zero to
56               two are considered to be lengths of 256 to 258, respectively.
57
58       Address Data  and  End records have a two‐byte Address field in little‐
59               endian byte order.  For Data  records,  this  is  the  starting
60               address  at  which to load the remaining payload of the record.
61               In End records, this is the address for the start of  execution
62               of the file, or zero if not applicable.
63
64       Data    Each  record  has  a variable length Data field, it consists of
65               zero or more bytes.  The interpretation of this  field  depends
66               on the Record Type field.
67

REFERENCE

69       This  information  comes  from the "Program Files" section of TRSDOS‐II
70       Reference Manual, Tandy Corporation, 1982.
71

73       srec_cat version 1.64
74       Copyright (C) 1998, 1999, 2000, 2001, 2002,  2003,  2004,  2005,  2006,
75       2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Peter Miller
76
77       The srec_cat program comes with ABSOLUTELY NO WARRANTY; for details use
78       the 'srec_cat -VERSion License' command.  This is free software and you
79       are  welcome  to  redistribute it under certain conditions; for details
80       use the 'srec_cat -VERSion License' command.
81

MAINTAINER

83       Scott Finneran   E‐Mail:   scottfinneran@yahoo.com.au
84       Peter Miller     E‐Mail:   pmiller@opensource.org.au
85
86
87
88Reference Manual                    SRecord                      srec_trs80(5)
Impressum