Seagate Ultra 320 Manual

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86 Parallel SCSI Interface Product Manual, Rev. A

Key:

M = Mandatory support O = Optional support NS = Not supported

IN = SCSI target port to SCSI initiator port OUT = SCSI Initiator port to SCSI target port

Yes = SCSI Initiator port shall clear the attention condition before last ACK of the Message Out phase.

Not required = SCSI Initiator port may or may not clear the attention condition before last ACK of the MES-

SAGE OUT phase (see Section 5.1)

N/A = Not applicable

Init = SCSI initiator port Targ = SCSI target port

80h+ = Codes 80h through FFh are used for IDENTIFY messages

Note. The clear attention condition only applies during MESSAGE OUT phase.

55h NS O O O QAS REQUEST 4.3.13 In N/A

03h O O O O RESTORE POINTERS 4.3.14 In N/A

02h O O NS NS SAVE DATA POINTER 4.3.15 In N/A

01h,03h,01h O O M M

SYNCHRONOUS DATA

TRANSFER REQUEST

4.3.16 In Out Yes

00h M M NS NS TASK COMPLETE 4.3.17 In N/A

01h,02h,03h O O M M

WIDE DATA TRANSFER

REQUEST

4.3.18 In Out Yes

Code

Support

Message name

Reference

section

Direction

Clear

attention

condition

IU transfers

disabled

IU transfers

enabled

Init Targ Init Targ In Out