Seagate Ultra 320 User Manual
Page 100
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
In
N/A
03h
O
O
O
O
RESTORE POINTERS
In
N/A
02h
O
O
NS
NS
SAVE DATA POINTER
In
N/A
01h,03h,01h
O
O
M
M
SYNCHRONOUS DATA
TRANSFER REQUEST
In
Out
Yes
00h
M
M
NS
NS
TASK COMPLETE
In
N/A
01h,02h,03h
O
O
M
M
WIDE DATA TRANSFER
REQUEST
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