Quantum DLT 2000, Руководство по эксплуатации продукта

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DLT2000 SCSI Interface
DLT2000/DLT2700 Cartridge Tape Subsystem 8-41
8.4.8.3 Last n Error Events Page (07h)
This page returns one parameter at a time that consists of the ASCII text for the
specified event log. The Parameter Number field in the CDB specifies the log event to
return. The log events EEROM are numbered 0 to 255, after which the number wraps
back to 0, and only a limited number of events are stored at a given time (up to 14). The
log event returned is the one whose number is equal to, or the first one greater than, the
Parameter Number specified in the CDB.
Parameter Code
Parameter code values are assigned from 0 to 27, where 0 would be the oldest event
stored, and the highest parameter code returned would be the most recent event.
Hex ASCII String
The text of the parameter includes a "Packet #", which is a value from 0 to 255. This
internal number is assigned when the packet is written into EEROM. Zero is normally
the oldest packet, but packet numbers can wrap around from 255 to 0. For a detailed
description of the packet string, see Appendix D.
Bit
7 6 5 4 3 2 1 0
4 (MSB) Parameter Length
5
(LSB)
Byte 6 DU DS TSD ETC TMC 0 LP
7 Parameter Length
8 (MSB)
— Hex ASCII string for Event n
—
n
(LSB)
Figure 8-24 Last n Error Events Page