HP C2488A Technical Reference Manual page 60

Table A-1.Supported SCSI-2 Commands (continued)
Command Opcode 'Use 'Use Description
(hex) Before When
Spinup
Wpl
Enabled
Read Capacity
25 No Yes Enables Initiator to request information regarding capacity of
logical unit. Use of PMI bit supported. Relative Addressing not
supported (REL=O) .
..
"
Read Defect 37 No Yes Requests Target to transfer media defect data to Initiator.
Data Target returns P, G, or P+G lists in physical sector or bytes from
index format.
Read Long
3E No
Yes Requests Target to return the header, data field and ECC bytes
of one physical sector.
Reassign Blocks 07 No No Requests Target to reassign defective logical blocks to an area on
logical unit reserved for this purpose. It is recommended that the
defect list contain only one defect location per command.
Receive lC No Yes Requests the target to send the results of a previous Send
Diagnostic Diagnostic command to the initiator.
Results
Release 17 Yes Yes Releases previously reserved logical units. Unit and Third-Party
Release supported. Extent Release not supported.
Request Sense 03 Yes Yes Only the Extended Sense Data Format is supported, The Bit
Pointer and Field Pointer fields are not used.
Reserve 16 Yes Yes Unit and Third-Party Reservations are supported. Extent
Reservations are not supported.
Rezero Unit 01 No Yes Requests Target to perform a recalibrate and then to seek to
logical address O.
Seek
No
Yes Requests Target to seek to a specified address. Both 6-byte and
(6-byte) OB
lO-byte (extended) formats are supported. Target returns GOOD
(lO-byte)
2B
status when seek is complete.
Send Diagnostic to No Yes Self-test (Power-On) and Translate Address are supported. IT
self-test·fails, CHECK CONDITION status indicates that results
are available via REQUEST SENSE command.
Start/Stop Unit IB Yes Yes
Both modes are supported.
Synchronize
35
No No
Ensures that specified logical blocks in the cache memory have
Cache their most recent data value recorded on the media.
Test Unit
00
Yes Yes
Checks Target spindle for proper speed. Target returns GOOD
Ready status if drive is up to speed.
Verify 2F No No Requests Target to verify the data written"on the media by
performing a selectable ECC check or a byte compare. Relative
addressing not supported. (REL=O).
Notes:
1. WP = Write Protect
2. Mode Select and Mode Sense commands that do not involve saved pages may be used before spinup.
A-4 SCSI Command Descriptions DRAFT
1/18/93 09:58