Chapter 6 Target Mode
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:
BITS
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
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| Error Sequence Code |
| CMD | MSG | CHK | DIS | |
Table 46: Meaning of SCSI Flags Field
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.
21020285 D | User’s Guide |
