HP C737990900 - Manual (Page 27)

Messages 27
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Extended Message Support
Ignore Wide
Residue
23h This message is sent by the drive to the host to indicate that a byte on a
wide bus is not valid.
This is supported whenever a wide transfer is active. It should be sent at
the end of the data phase. The standard action of the drive is to send
this message between the data phase and the status phase with no
disconnect.
Message Reject 07h This message is sent to the initiator when the message received by the
drive is unsupported or inappropriate.
Restore Pointers 03h This message causes the initiator to reset its data transfer pointers to the
values they held when the last save data pointers message was sent. It
will be sent when a parity error is detected on the bus or when an
Initiator Detected Error message is received in order to retry the data
phase.
Save Data Pointers 02h This message instructs the initiator to save its current data transfer
pointers for use with a subsequent Restore pointers message. This
message will always be sent before a Disconnect message during data
phases.
Name Code Support
Name Code Support
Synchronous Data
Transfer Request
01h The drive will never initiate a Synchronous data transfer negotiation, but
will expect the initiator to do so.
If the message is received after selection and before the command phase,
it will then go to message-in phase and respond with a valid response to
complete the negotiation.
Wide Data Transfer 03h The drive will never initiate a Wide data transfer negotiation but will
expect the initiator to do so.
If the message is received after selection and before the command phase,
it will then go to message-in phase and respond with a valid response to
complete the negotiation.
Note that SDTR negotiated parameters will become asynchronous after a
WDTR.