Reference Guide

Chapter 4 SCSI Commands
MODE SELECT (6) / (10) Command (15h / 55h)
DLT-S4 Interface Reference Guide 140
Table 84 TapeAlert MODE
SELECT Page — Field
Descriptions
Field Description
PS Parameters Savable. For
MODE SELECT, must be set to 0.
SPF SubPage Format. Always set to 0. Indicates that this page uses the page_0 page format.
Page Code Identifies the type of
MODE SELECT page being transferred. A value of 1Ch identifies
this as the TapeAlert Page.
Page Length Indicates the number of bytes in the page, excluding bytes 0 and 1. The length is
returned in
MODE SENSE commands and must subsequently be set to the same value
when performing
MODE SELECT.
Perf Performance. Performance Impacting Exceptions are acceptable. The drive ignores this
bit.
EBF Enable Background Function. Must be set to 0.
EWASC Enable Warning. Must be set to 0.
DExcpt Disable Information Exception Operations. When set to 0, the reporting method
specified by the contents of the MRIE field is selected. When set to 1, all information
exception conditions are disabled regardless of the contents of the MRIE field. When in
this mode, the software polls the TapeAlert Log page. To enable
CHECK CONDITION
mode, set DExcpt to 0. Default setting is 1.
Test Generates false TapeAlert conditions to test the response to failure conditions (see the
Report Count / Test Flag Number description for more information). If both Test and
DExcpt are set to 1, the drive returns
CHECK CONDITION status, Sense Key ILLEGAL
REQUEST
, and Additional Sense Code set to INVALID FIELD IN PARAMETER LIST.
LogErr Error Log. Must be set to 0.