Ciprico Rimfire 3880, User Manual

Page: 114 / 230

21020285 D User’s Guide
Chapter 6 Target Mode Pass-through Commands
Page 6 - 12 Target Selection Data Structure
SCSI Flags
This byte indicates the status of the current command, and of the SCSI bus.
You must use it to check for certain conditions that may have occurred and
need specific action. The format is as follows:
DIS Disconnect - The bit indicates whether the adapter has disconnected
from the SCSI bus while processing this command.
0
⇒
The adapter has not disconnected.
1
⇒
The adapter has disconnected to process this command.
CHK Check Condition - Because of an error condition, the RF3880 may
attempt to send a Check Condition status followed by a Command Complete
message to the initiator.
0
⇒
No Check Condition status was sent.
1
⇒
A Check Condition status and Command Compete message to the initiator
were attempted.
MSG Message - The adapter (as Target) may receive a Message from the
initiator. This bit indicates whether a Message was received and can be found
in the Message Byte Received Field.
0
⇒
No Message Byte was received.
1
⇒
The Message Byte Received field contains a valid Message from the
initiator.
CMD Command Bytes Received - This bit indicates whether the adapter
has placed SCSI Command Bytes into the CDB Received area of the Target
Selection Data Structure.
0
⇒
No SCSI commands were received.
1
⇒
A SCSI command was received. The CDB Received area is valid, and
CDB Length field is valid.
BITS
7 6 5 4 3 2 1 0
Error Sequence Code CMD MSG CHK DIS
Table 46: Meaning of SCSI Flags Field