Product manual

Appendix A. Supported messages

A.1 Single-byte messages

The implemented single-byte messages are listed below.

Code Message name Direction

Must

negate ATN

before last

ACK?

Abort O Yes

Abort tag O Yes

Bus device reset O Yes

Clear queue O Yes

Command complete I —

Disconnect I —

Identify I/O No

Ignore wide residue I —

Initiate recovery I/O Yes

Initiator detected error O Yes

Linked command complete

I —

Linked command complete

(with flag)

I —

Message parity error O Yes

Message reject I/O Yes

No operation O Yes

Head of queue tag O No

Ordered queue tag O No

Simple queue tag O No

Release recovery O Yes

Restore pointers I —

Save data pointer I —

Terminate I/O process O Yes

ST3655 Family SCSI Drives Product Manual, Rev. A 77