Commodore 1541 - Directory Format

BYTE
0-1
2-31
34—63
66-95
98—127
130—159
162—191
194—123
226-255
Trad [ and
*File entry
•File
•File
•File
•File
*File
* File
♦File
entry
entry
entry
entry
entry
entry
entry
DIRECTORY FORMAT
Track 18. Block 1 for 1540/1541
DEFINITION
block of next directory block.
1
2
3
4
5
6
7
8
•STRUCTURE OF SINGLE 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 S80 to indicate properly closed
file.
TYPES: 0 = DELeted
1 - SEQentiaL
2 = PROGram
3 = USER
4 = RELative
Track and block of 1st data block.
File name padded with shifted spaces.
Relative file only: track and block for first side sector
block.
Relative file only: Record size.
Unused.
Track and block of replacement Tile when OPEN@ b
in effect.
Number of blocks in file: low byte, high byte.
fi7