Quantum ATL SuperLoader ATL, User Manual

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Chapter 3 Media Changer Commands
Mode Select (6) / (10) Command (15h / 55h)
66 Quantum ATL SuperLoader Software Interface Guide
Mode Select (6) / (10) Command (15h / 55h)
3
The MODE SELECT command (available in either 6- or 10-byte
format) enables the host to configure the media changer.
Implementing MODE SELECT and MODE SENSE requires
“handshaking” between the host and the media changer. Before
configuring the media changer, the host should issue a MODE
SENSE command to the media changer to obtain a report of the
current configuration and determine what parameters are
configurable. The host interprets this information and then may
issue MODE SELECT to set the media changer to the host’s
preferred configuration. The Mode Parameter List described in
Mode Parameter List on page 68 is passed from the initiator to the
media changer during the command’s DATA OUT phase. The
media changer device does not allow the host to save any values
on any page.
Information for the media changer is carried on a number of pages,
each of which serves to set the media changer’s operating
parameters. The MODE SELECT pages supported, and the page
within this manual that details each, are:
Page Code Description
1Ch TapeAlert Page (1Ch) on page 79 (LTO only)
1Dh Element Address Assignment Page on page 82
1Eh Transport Geometry Parameters Page on page 85
1Fh Device Capabilities Page on page 86