LOG SELECT 4Ch
Commands
55
LOG SELECT 4Ch
The Log Select command causes log data on the drive to be reset to its default value or to be set to
an initiator specific value.
Pre-execution checks:
Command descriptor block:
CDB fields:
The following are valid combinations of values for the PCR (Parameter Code Reset), Parameter List
Length and PC (Page Control) fields:
Otherwise
CHECK CONDITION status is returned, the sense key is set to ILLEGAL REQUEST with
additional sense of 2400h (Invalid Field in CDB).
Illegal Field Reservation Deferred Error Unit Attention
7 6 5 4 3 2 1 0
0 Operation Code (4Ch)
1 Reserved (0) PCR SP (0)
2 PC Reserved (0)
3
Reserved (0)
6
7 (MSB)
Parameter List Length
8 (LSB)
9 Control
PCR Parameter List Length PC Result
1 0 01b or 11b All the logs on the drive that can be reset are reset to their
default values.
1 0 00b or 10b No action is taken and GOOD status is returned.
0 >0 01b or 11b Data is sent from the host and is written to the indicated
logs, provided those logs are writable.
PCR 0 Parameter Code Reset. The function performed is defined by the PC field.
SP 0 The Save Page (SP) flag is not supported and must be set to 0.
