Fujitsu M2488, Руководство по эксплуатации продукта

Страница: 143 / 528

M2488 PRODUCT GUIDE TAPE UNIT SCSI COMMANDS
April 1997 CG00000-011503 REV. A 4-61
set to 1) with a CHECK CONDITION status with the sense key set to ILLEGAL REQUEST
and the additional sense key set to INVALID FIELD IN PARAMETER LIST,
f. Issue a MODE SELECT command, sending these parameters,
The Disable Block Descriptor (DBD) bit value of 1 specifies that no block descriptor is returned
in the MODE SENSE data. When this bit is set to 0, the target will return a block descriptor in
the MODE SENSE data.
The Page Control (PC) field indicates the type of page parameter values to be returned by the
target. The target returns the same page length for each supported page regardless of the value
in the PC. The combination of the page control field value and the page code being set causes
the target to return the appropriate values for the page selected by its respective page code. A
page code value of 3Fh indicates all pages implemented by the target are returned to the initia-
tor with the values reported defined by the page control field. For a page code value of 3Fh, all
pages are returned in ascending page code order, except for mode page 00h which will always
be reported last.
Regardless of the setting of the PC field, the Mode Sense data header and block descriptor will
return the current values for the fields contained in them.