Fujitsu manual Scsi Messages M2488 Product Guide, Abort code 06h, BUS Device Reset code 0Ch

SCSI MESSAGES			M2488 PRODUCT GUIDE
	Table 3-1.	M2488 SCSI Messages (Continued)
CODE	MESSAGE		DESCRIPTION	PARAGRAPH
0Ch	BUS DEVICE RESET		Directs the target to clear all current commands	3-2.2 on page 3-2
			on that SCSI device.
			Sent to an initiator to indicate the number of
			valid bytes sent during the last REQ/ACK hand-
23h	IGNORE WIDE RESIDUE		shake and REQB/ACKB handshake of a DATA	3-2.7 on page 3-7
			IN phase is less than the negotiated transfer
			width.
80h-			Sent to establish the physical path connection
	IDENTIFY		between an initiator and target for a particular	3-2.6 on page 3-7
FFh
			logical unit.
3-2.1	ABORT code 06h
	This message is sent from the initiator to the target to clear the present operation.

If a logical unit has been identified, all pending data and status for the issuing initiator from the affected logical unit are cleared, and the target goes to the BUS FREE phase. Pending data and status for other initiators are not cleared. If a logical unit is not identified, the target goes to the BUS FREE phase. No status or ending message is sent for the operation. It is not an error to issue this message to a logical unit that is not currently performing an operation for the initiator.

3-2.2 BUS DEVICE RESET code 0Ch

This message is sent from an initiator to direct a target to clear all current commands on that SCSI device.

This message forces the SCSI device to an initial state with no operations pending for any initiator. Upon recognizing this message, the target goes to the BUS FREE phase.

3-2.3 COMMAND COMPLETE code 00h

This message is sent from a target to an initiator to indicate the execution of a command or a series of linked commands has terminated and valid status was sent to the initiator.

After successfully sending this message, the target goes to the BUS FREE phase by releasing BSY. The target considers the message transmission to be successful when it detects the negation of ACK for the COMMAND COMPLETE message with the ATN signal false.

** NOTE **

The command may have been executed successfully or unsuccess- fully as indicated in the status.

3-2.4 DISCONNECT code 04h

This message is sent from a target to inform the initiator that the present physical path is going to be broken (the target plans to disconnect by releasing BSY), but a later reconnect is required in order to complete the current operation.

This message does not cause the initiator to save the data pointer. After successfully sending this message, the target goes to the BUS FREE phase by releasing BSY. The target considers the message transmission to be successful when it detects the negation of ACK for the DISCONNECT message with the ATN signal false.

3-2 CG00000-011503 REV. A April 1997