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Commodore 1541-II - Page 99

Commodore 1541-II
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1541
DIRECTORY
FILE
FORMAT
Track
18,
Sector
1.
BYTE
0,1
2-31
34-63
66-95
98-127
130-159
162-191
194-223
226-255
DEFINITION
Track
and
sector
of
next
directory
block.
File
entry
1*
File
entry
2*
File
entry
3*
File
entry
4*
File
entry
5*
File
entry
6*
File
entry
7*
File
entry
8*
♦STRUCTURE
OF
EACH
INDIVIDUAL
DIRECTORY
ENTRY
BYTE
0
1-2
3-18
19-20
21
22-25
26-27
28-29
CONTENTS
128
+
type
•
DEFINITION
File
type
OR'ed
with
$80
to
indicate
properly
closed
file.
(if
OR'ed
with
SCO
instead,
file
is
locked.)
TYPES:
0
=
DELeted
1
=
SEQuential
2
=
PROGram
3
=
USER
4
=
RELative
Track
and
sector
of
first
data
block.
File
name
padded
with
shifted
spaces.
Relative
file
only:
track
and
sector
of
first
side
sector
block.
Relative
file
only:
Record
length.
Unused.
Track
and
sector
of
replacement
file
during
an
©SAVE
or
©OPEN.
Number
of
blocks
in
file:
stored
as
a
two-byte
integer,
in
low
byte,
high
byte
order.
91

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