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1541 RELATIVE FILE FORMAT
BYTE
DEFINITION
DATA BLOCK
0,1
2-255
Track and sector of next data block.
254 bytes of data. Empty records contain $FF
(all binary ones) in the first byte followed by $00
(binary all zeros) to the end of the record. Partially
filled records are padded with nulls ($00).
SIDE SECTOR BLOCK
0-1
2
3
4-5
6-7
8-9
10-11
12-13
14-15
16-255
Track and sector of next side sector block.
Side sector number (0-5)
Record length
Track and sector of first side sector (number 0)
Track and sector of second side sector (number 1)
Track and sector of third side sector (number 2)
Track and sector of fourth side sector (number 3)
Track and sector of fifth side sector (number 4)
Track and sector of sixth side sector (number 5)
Track and sector pointers to 120 data blocks.
90
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