Fujitsu manual M2488 Product Guide Tape Unit Scsi Commands

M2488 PRODUCT GUIDE		TAPE UNIT SCSI COMMANDS
	Table 4-1. M2488 SCSI Commands (Continued)
OP	COMMAND	DESCRIPTION	PARAGRAPH
CODE
1Bh	LOAD UNLOAD	Performs either a rewind operation or a rewind and	4-3.7 on page 4-25
	(optional)	unload operation.
1Ch	RECEIVE DIAGNOSTIC	Requests that result data generated for a previous	4-3.19 on page 4-83
	RESULTS (optional)	SEND DIAGNOSTIC command be sent to the initiator.
1Dh	SEND DIAGNOSTIC	Requests the target to perform diagnostic tests on itself,	4-3.27 on page 4-117
		or on the attached peripheral devices.
2Bh	LOCATE (optional)	Causes the tape unit to position to a specific logical	4-3.8 on page 4-28
		location.
	READ POSITION	Causes 20 bytes to be sent from the target to the initia-
34h		tor. The 20 bytes are a report of the position of the tape	4-3.17 on page 4-75
	(optional)
		unit and information about blocks stored in the buffer.
	WRITE BUFFER	Used in conjunction with the READ BUFFER com-
3Bh		mand as a diagnostic function for testing target memory	4-3.32 on page 4-144
	(optional)
		and the SCSI bus integrity.
		Used in conjunction with the WRITE BUFFER com-
3Ch	READ BUFFER (optional)	mand as a diagnostic function for testing target memory	4-3.16 on page 4-70
		and the SCSI bus integrity.
		Used to modify the operating definition of the selected
	CHANGE DEFINITION	target with respect to all initiators. This command is	4-3.2 on page 4-5 & 5-
40h		used in conjunction with the Inquiry command to
	(optional)		3 on page 5-17
		change (and optionally save) parameters that affect the
		operation of the target.
		Provides a means for the initiator to retrieve informa-
		tion maintained by the target about the supported densi-
	REPORT DENSITY SUP-	ties for the MTU logical unit.
44h	PORT (configuration	Note: Support of this command is configuration depen-	4-3.24 on page 4-105
	dependent)	dent. In order for this command to be supported, FT4
		(Feature Mode 4), bit 6 (40h) must be set to 1. See the
		command description for more information.
		Provides a means for the initiator to manage statistical
4Ch	LOG SELECT (optional)	information maintained by the target about itself and	4-3.9 on page 4-32
		attached logical units.
		Provides a means for the initiator to retrieve statistical
4Dh	LOG SENSE (optional)	information maintained by the target about itself and	4-3.10 on page 4-33
		attached logical units.
C1h	LOOP WRITE TO READ	Used to check the controller’s data and control path.	4-3.11 on page 4-49
	(vendor unique)
CFh	DISPLAY (vendor unique)	Used to display a message on the operator panel of the	4-3.3 on page 4-8 or
		tape drive or cartridge loader (if installed.)	4-3.4 on page 4-12

April 1997 CG00000-011503 REV. A 4-3