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Chapter 2 Messages
Message Format
Quantum ATL SuperLoader Software Interface Guide
11
Two-byte messages consist of two consecutive bytes. The value of
the first byte, as defined in
, determines which message is to
be transmitted. The second byte is a parameter byte that is used as
defined in the message description.
A value of 1 in the first byte indicates the beginning of a multiple-
byte extended message. The minimum number of bytes sent for an
extended message is three. The extended message format is shown
and the data fields are described in
EXTENDED MESSAGE
(Synchronous Data and Wide
Data Transfer Requests)
*
01h
In
Out
IDENTIFY
80h – FFh
In
Out
IGNORE WIDE RESIDUE
23h
In
INITIATOR DETECTED
ERROR
05h
Out
LINKED COMMAND
COMPLETE
0Ah
In
LINKED COMMAND
COMPLETE (with flag)
0Bh
In
MESSAGE PARITY ERROR
09h
Out
MESSAGE REJECT
07h
In
Out
NO OPERATION
08h
Out
RESTORE POINTERS
03h
In
SAVE DATA POINTER
02h
In
*
Extended message (
Message
Message Code
Direction
Summary of Contents for ATL SuperLoader ATL
Page 1: ...ATL SuperLoader DLT and ATL SuperLoader LTO Software Interface Guide 81 60220 01 A02...
Page 18: ...Preface Document Conventions xviii Quantum ATL SuperLoader Software Interface Guide...
Page 44: ...Chapter 2 Messages Supported SCSI Messages 26 Quantum ATL SuperLoader Software Interface Guide...
Page 196: ...Index 178 Quantum ATL SuperLoader Software Interface Guide...