Table 6-4 read defect list command bytes, Table 6-4, Read defect list command bytes -9 – Maxtor D540X-4K User Manual

Page 72

Advertising
background image

ATA Bus Interface and ATA Commands

6-10

Maxtor D540X-4K 20.4/40.0/60.0/80.0 GB AT

6CDNG  

READ DEFECT LIST Command Bytes

0QVG 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.

4')+56'4

8#.7'

&'(+0+6+10

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

Advertising