Chapter 4: SCSI Commands
4-32
July 2004
81-81276-01 Rev A01
Parameter Control Byte
DU, DS, TSD, ETC, TMC, LBIN, and LP are collectively referred to as the
Parameter Control Byte.
DU
Disable Update. For a list parameter this field is
always 0.
DS
Disable Save. Since the tape device does not support
saving parameters, this bit is always 1.
TSD
Target Save Disable. Since the tape device does not
support saving parameters, this bit is always 1.
ETC
Enable Threshold Comparison. For a list parameter this
field is always 0.
TMC
Threshold Met Criteria. For a list parameter this field is
always 0.
LP
List Parameter. This bit is always set to 1 since the tape
drive treats the parameter codes as list parameters.
Parameter Length
This field specifies the number of bytes of the parameter value.
Parameter Value (Hex
ASCII String for
Event n)
The content of the parameter value is an ASCII string which describes the error
event. 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 EEPROM.
Zero is normally the oldest packet, but packet numbers can wrap around from 255
to 0.
Table 4-17.
Log Parameters for Last
n
Error Events (07h) LOG SENSE Page — Field Descriptions
Field Name
Description
Summary of Contents for DLT1/VS80 SCSI
Page 1: ...DLT1 VS80 SCSI Interface Guide...
Page 6: ...DLT1 VS80 SCSI Interface Guide vi July 2004 81 81276 01 Rev A01 Notes...
Page 12: ...Table of Contents xii July 2004 81 81276 01 Rev A01 Notes...
Page 16: ...List of Figures xiv July 2004 81 81276 01 Rev A01 Notes...
Page 20: ...List of Tables xviii July 2004 81 81276 01 Rev A01 Notes...
Page 24: ...Chapter 1 Introduction 1 4 July 2004 81 81276 01 Rev A01 Notes...
Page 32: ...Chapter 2 General SCSI Bus Operation 2 8 July 2004 81 81276 01 Rev A01 Notes...
Page 42: ...Chapter 3 SCSI Messages 3 10 July 2004 81 81276 01 Rev A01 Notes...
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