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5-114 C141-E221
(41) READ LOG EXT (X'2F') [Optional command (Customize)]
• Description
This command reads data from the general-purpose log of a device. The general-
purpose log includes the extended SMART comprehensive error log, extended
self-test log, SMART selective self-test log, and other logs. The types of logs
available depend on the customize operation. For information on the DRQ,
INTRQ, and BSY protocols related to the transfer of data, see Section 5.4.1.
When command is issued (I/O register setting values)
1F7H (CM) 0 0 1 0 1 1 1 1
1F6H (DH) x x x DV xx
1F5H (CH) P
1F5H (CH) C
1F4H (CL) P
1F4H (CL) C
1F3H (SN) P
1F3H (SN) C
1F2H (SC) P
1F2H (SC) C
1F1H (FR) P
1F1H (FR) C
xx
xx
Sector offset (15-8)
Sector offset (7-0)
xx
Log address
Sector count (15-8)
Sector count (7-0)
xx
xx
C: Current
P: Previous
When command is completed (read data in I/O register)
1F7
H
(ST) Status information
1F6
H
(DH) x x x DV xx
1F5
H
(CH) 1
1F5
H
(CH) 0
1F4
H
(CL) 1
1F4
H
(CL) 0
1F3
H
(SN) 1
1F3
H
(SN) 0
1F2
H
(SC) 1
1F2
H
(SC) 0
1F1
H
(ER)
xx
xx
xx
xx
xx
xx
xx
xx
xx
0: HOB=0
1: HOB=1