IBM Ultrium Internal Tape Drive T200, Reference Manual

Page: 112 / 126

Messages
Message Out
Table 112. Supported Outbound Messages
Name Code Support
Abort 06h An abort condition is generated (see “Abort Handling” on
page 94).
Bus Device Reset 0Ch A reset condition is generated (see “Abort Handling” on
page 94).
Extended Message 01h See “Unit Attention Conditions” on page 87 for extended
message support.
Identify 80h+ The Identify Out message is sent by the initiator to identify
the Logical Unit to be accessed and to set Disconnect
Privilege. The LUNTAR flag must be 0. The Identify Out
message must be sent as the first thing after selection. If it
is sent at any other time, the drive responds with a
Message Reject message and goes to Bus Free.
Initiator Detected
Error 05h The initiator has detected an error in the data being sent
in a Message Command, Data, or Status phase. The drive
retries the data burst or message (see “Bus Parity Errors”
on page 97). If the message is received immediately after
an Identify message or after the Command Complete
message has been sent, the drive goes to Bus Free.
Message Parity Error 09h The initiator has detected a parity error in a message. The
drive retries the message (see “Bus Parity Errors” on page
97). If the message is received during a Command, Data,
or Status phase, immediately after an Identify message, or
after the Command Complete message has been sent, the
drive goes to Bus Free.
Message Reject 07h This message is sent when the initiator does not support a
message sent by the drive or considers the message
inappropriate. If the message being rejected is Disconnect,
Synchronous Data Transfer Request, or Wide Data
Transfer Request, the operation continues without those
features. For all other messages except Restore Pointers,
the message is treated as an Abort message. If the
message is received during a Command, Data, or Status
phase, immediately after an Identify message, or after the
Command Complete message has been sent, the drive
goes to Bus Free.
No Operation 08h This message has no effect and is ignored.
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Ultrium Internal Tape Drive and 3580 Ultrium Tape Drive: SCSI Reference