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during the reading of an ID field (see Section 1.2) were not the same as the CRC characters appended to the field when it
was written by a format track operation.
NO ADDRESS MARK. If the address error (3), seek error (2) and CRC error (1) bits are true, it indicates that no
address mark (see Section 1.2) was encountered for a full revolution of the diskette. This usually indicates that the
track has not been formatted.
,
r
.
;
:
, - - -\
DATA MARK ERROR. If the address error (3), seek error (2), CRC error (1), and deleted record (0) bits are true, it
indicates that the data field of a particular sector was not preceded by either a data mark or a deleted data mark.
2-12
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