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ATA Bus Interface and ATA Commands
6-10 Maxtor D540X-4K 20.4/40.0/60.0/80.0 GB AT
READ DEFECT LIST Command Bytes
Registers 1F2h and 1F3h must contain the transfer length that is
appropriate for the specific product, and 1F4h and 1F5h must
contain the exact values shown. These values function as a key.
The drive responds by setting the ABRT bit in the Error register
if the bytes are not entered correctly.
Pending defects will be excluded from the list, since no alternate sector is being used
as their replacement, and since they may be removed from the drive’s internal pending
list at a later time. Table 6-5 shows the overall format of the defect list, and Table 6-
6 shows the format of the individual defect entries.
Sector
Count
Variable Length in Sectors
(LSB)
Sector
Number
Variable Length in Sectors
(MSB)
Cylinder
Low
FFh Password
Cylinder
High
3Fh Password
Device/
Head
AXh = Drive 0 Drive Select
BXh = Drive 1 —
Command F0h Extended Command
Code