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D I R
COMM.~ND
9. 1 - - Use
be
a
multiple
of the basic unit of
all~cation
(see
Chapte~
24>.
The size is, therefore, the physical size of the
file.
The
logical
file
size.
or
the number of sectors from the
beginning to the end-of-file indicator, may be smaller.
The DD field is an eight-bit coded field that
describes
the directory
entr~'s
physical position
~ithin
the directory.
It is
inte~preted
as
rQllo~s:
7
5
4
3
9. 1. 4 Segment d escr
i
p
tOT'S
2
1
o
Position within sector
(0-7)
Physical sector number
($3-$16)
loft he" A "
0
P t ion iss p e c
i
fie don the comma n d 1
i
n e
I
the n
in
addition
to
having the entire directory entry displayed
ror each file
name,
the file's
allocation
information
will
also
be
shown.
The allocation information is contained
in
the rile's RIB and descnibes where each segment of
the
file
is
located
on
the diskette.
This information is displayed
following the complete directory entry.
One
line
is
sho~n
for
each
segment of the file.
The format of the allocation
information
is
ss
pppp
lIZ
Ulhere "ss" is the number
OT
the
segment
npppp"
is
the
physical
sector
number
s tart s the s e
9
me n t
( hex a dec
i
ma 1 )
I
and
II
z
Z I
II
the
s e
9
men t i n
sec tor s
( hex a dec
i
ma 1 ) .
directorq entry could appear as follows:
( 0- 56,
dec
i
ma
1 ) ,
oT the sector that
is
the
size
oT
For
e x amp
1
e,
a
FORLB
. RO
. OS .. 3 0490 0088 75
00 0490 080
01 0510 008
The
rile
FORLB.RO
consists
OT
two
segments.
The
first
segment
starts
in
physical
sector $490 and is $80 sectors
long.
The second segment starts in
ph~sical
sector $510
and
is 8 sectors long.
The rile's physical size is $88 sectors.
9.1.5
Other options
Normally,
the
output from the DIR command is displayed
.--",
on the
system console.
The "Llt
option can be used to
direct
./
Page
09-04
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