3.0 LOOKUP
MUFLOOK
is a program
which
allows
you
to
read the header records. Why
should
there be headers and
why
do
you need
to
look at them?
A header record is a 128-byte record
which
is
written
on the front
of
each MUF-
BAR.nnn file. The record
contains
the
following
information:
• The name
of
the file
itself,
such
as MUFBAR.001.
• The
original
specification
for
the
backup,
such
as FILE???DAT.
•
The
ID
Comment
which
you typed at the
start
of
the backup.
• The name
of
the
original
file
which
contained
this
data.
This
is the
name
which
will
be used
to
restore the file. For
example
: FILEA.DAT.
•
The
original
size
of
the file.
This
is a
hexadecimal
count
of
the
number
of
128-byte records in the
original
file. All
of
the records may
not
be in
this
file.
• The
starting
and ending record numbers
for
this
file.
Assume
MUF-
BAR.001 can hold
only
the
first
0100h records
of
FILE
.DAT
which
con-
tains
0180h
records
(numbered
0000h
through
017Fh). Then
MUFBAR.002
would
contain
the remainder. The header record
of
MUF-
BAR.001
will
contain
the
number
0000h as the
start
and 00FFh as the
ending record numbers; MUFBAR.002
will
contain
100h as
its
start
record and 017h as
its
endi ng record.
• The
number
of
original
files
in
this
backup.
Information
in the header record is
compared
during
the
restoration
process
to
make sure
the
files
are being re-assembled properly. The program
MUFLOOK
allows
the user
to
read
these
header records
to
determine
their
nature
and
origin.
To
run the program:
1.
Obtain the CP/M prompt. Note: the
default
drive should not
be
your
floppy
drive when running
this
program.
2.
Type: MUFLOOK
Press RETURN.
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