Fujitsu manual Chapter Scsi Messages, M2488 Tape and Medium Changer Scsi Messages

M2488 PRODUCT GUIDESCSI MESSAGES

CHAPTER 3

SCSI MESSAGES

3-1 INTRODUCTION

Chapters 3 through 6 are the Host Interface Specification for the M2488.

This chapter describes the messages for the M2488 tape drive and the medium changers. The following information is located in this chapter:

3-2 M2488 TAPE AND MEDIUM CHANGER SCSI MESSAGES 3-3 SCSI BUS STATUS

3-2 M2488 TAPE AND MEDIUM CHANGER SCSI MESSAGES

Table 3-1 describes the SCSI messages used with the M2488. For more detailed information on the SCSI message, refer to the paragraph listed in the PARAGRAPH column.

Table 3-1. M2488 SCSI Messages

CODE	MESSAGE	DESCRIPTION	PARAGRAPH
00h	COMMAND COMPLETE	Indicates the execution of a command has termi-	3-2.3 on page 3-2
		nated and valid status was sent to the initiator.
01h	EXTENDED MESSAGE	Sent as the first byte of a multiple-byte message.	3-2.5 on page 3-3
		Directs the initiator to save a copy of the present
02h	SAVE DATA POINTER	active data pointer for the currently attached log-	3-2.15 on page 3-9
		ical unit.
03h	RESTORE POINTERS	Restores the most recently saved pointers (for the	3-2.14 on page 3-9
		currently attached logical unit) to the active state.
04h	DISCONNECT	Informs the initiator that the present physical	3-2.4 on page 3-2
		path is going to be broken.
05h	INITIATOR DETECTED ERROR	Informs a target an error has occurred.	3-2.8 on page 3-8
06h	ABORT	Sent to the target to clear the present operation.	3-2.1 on page 3-2
07h	MESSAGE REJECT	Indicates the last message received was inappro-	3-2.12 on page 3-8
		priate or was not implemented.
		Sent in response to a target’s request for a mes-
08h	NO OPERATION	sage when the initiator does not currently have	3-2.13 on page 3-9
		any other valid message to send.
09h	MESSAGE PARITY ERROR	Indicates one or more bytes in the last message,	3-2.11 on page 3-8
		received by the initiator, had a parity error.
	LINKED COMMAND COM-	Indicates to the initiator that the completion and
0Ah		execution of a linked command and status was	3-2.9 on page 3-8
	PLETE
		sent.
	LINKED COMMAND COM-	Indicates to the initiator that the completion and
0Bh		execution of a linked command with the flag bit	3-2.10 on page 3-8
	PLETE (with flag)
		set to 1 and status was sent.

April 1997 CG00000-011503 REV. A 3-1