MERLIN LEGEND Communications System Release 6.1
System Programming and Maintenance (SPM)
555-661-140
Issue 1
August 1998
Programming with SPM
Page 33
Using SPM
NOTE:
Back up your system programming information on a regular basis.
A current backup file allows you to quickly and easily restore your
system, if the need arises.
Determining the Release Number
of a Backup File
If you have a backup diskette but do not know its release number, you
may be able to find this information in the backup header. Beginning with
later versions of Release 1.1, the backup file contains a backup header
128 bytes long. Approximately 59 of these bytes are currently used.
Bytes 55 through 59 of the header contain the MERLIN Legend
Communication System Release number, as shown in Table 4. (Release
1.0 and early versions of Release 1.1 do not contain this information in
readable form.)
Table 4. Backup Header: Release Number
The release number is found in the first two bytes (four characters) of
the identification number. For example, 0600 = 6.0, 0402 = 4.2.
If the backup file is compressed (Release 1.1 and later), you can read
the header but you cannot read the data area following the header. Use
W\SH
[
backup filename
] to read the header on a DOS system or
FDW
[backup
filename
] to read the header on a UNIX System.
Release No. Build No. System Size Mode
Size 2 bytes 12 bytes 1 byte 1 byte
Examples 03 00 32 01 01 - Key
02 01 02 - Behind Switch
03 - Hybrid/PBX
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