Commodore 1541 - Page 31

Table
5.J: 1540/1541 BAM FORMAT
Track 18, Sector 0.
BYTE
0,1
2
3
4—143
CONTENTS
18,01
65
0
DEFINITION
Track and sector of first directory block.
ASCII character A indicating 4040 format.
Null flag for future DOS use.
Bit map of available blocks for tracks 1-35.
•1 = available block
0 = block not available
{each bit represents one block)
Table 5.2:
1540/1541 DIRECTORY HEADER
Track 18, Sector 0.
BYTE
144—161
162—163
164
165,166
166—167
171—255
CONTENTS
160
50,65
160
0
DEFINITION
Disk name padded with shifted spaces.
Disk ID.
Shifted space.
ASCII representation for 2A which is DOS version
and formal type-
Shifted spaces.
Nulls, not used.
Note: ASCII characters may appear in locations 180 thru 191 on some diskettes.