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DUMP COMMAND
11.2 -- DUMP Command Set
FUNCTIONS.
WB
W~ite
the
contents of the sector change
buffer into the Cluster Allocation Table.
The
WB
command
is
only
valid
in the
Physical Mode
or
operation.
WD
m
Write the contents
o~
the
sector-
change
bUTfer
into
logical
sector
"m"
or
the
directory.
The WD command is only
valid
in the Phqsical Mode of operation.
W
m
Write
the
contents of the sector change
buffer into sector "m".
The current mode
of
operation
will determine whether
"mil
is a logical or a
ph~$ical
sector number.
If
the
current mode of operation is the
Logical
Model
then
writing
past
the
end-of-file sector will cause the CAT and
the file's RIB to be updated in the event
that
additional
diskette
space
is
allocated.
11.2.9 Fill change buffer -- F
The F command is used to fill the sector
change
burfer
with a certain bit pattern
o~
a certain ASCII
characte~.
The
format of the F command is:
where
the
hexadecimal
the buffer
-Pi
rst
bit
with
associated
with
the
F
command.
F
c or
Fila"
form
will
rill
the
bu~~er
with
~he
pattern
1Ic:/I, and the sec:ond Torm will fill
the
character
"a".
The
sector
address
the
sector change
bUT~e~
is invalidated
by
11. 2.10
Examine/change sectoT buffer
A
special command is
used
fOT
examining/changing
the
individual
bytes
or
the sector change buffeT.
In order to
gain access to a specific byte of the sector
change
buffer,
the offset must be specified in the following manner:
b/<cr:>
where
lib"
is
a
hexadecimal
number
($OQ-7F).
The slash
character causes the location at offset
"b
ll
to
be
"opened"
a.n.d
its con ten t s dis pIa y e
d .
Aft
era par tic.u l.a r
1
0
cat ion has
been opened in this manner,
the change buffer can be examined
O~
changed
a
byte at
a
time
by
using the following commands:
Page
..~
.
J
./
\.
11-08
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