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Chapter 4 SCSI Commands
MODE SELECT (6) / (10) Command (15h / 55h)
DLT-S4 Interface Reference Guide
156
Changeable Parameters
Within
MODE SELECT
4
Table 88
lists the
MODE SELECT
command’s changeable parameters and
their default, minimum, and maximum values. Descriptions of the
various parameters are provided in the discussions of the different
MODE
SELECT
mode pages.
Table 88 Changeable Mode
Parameters Within
MODE
SELECT
Note:
Parameter rounding is supported for all parameters except the
Block Descriptor Length parameter.
Page: Parameter
Default
Minimum
Maximum
Header: Buffered Mode, Device Specific Byte
1
0
1
Block Descriptor Length
08h
00h
08h
Block Descriptor: Block Length
0
0
FFFFFCh
1
Read / Write Error Recovery (01h): PER bit
0
0
1
Control Mode (0Ah): Report Log Exception Condition
0
0
1
Control Mode (0Ah): Autoload Mode
0
0
2
Data Compression (0Fh): Data Compression Enable
1
0
1
Disconnect / Reconnect (02h): Maximum Burst Size
0080h
0000h
FFFFh
Device Configuration (10h): Write Delay Time
64h
64h
1964h
Device Configuration (10h): Synchronize at Early Warning
1
0
1
Device Configuration (10h): Select Data Compression Algorithm
1
0
1
TapeAlert (1Ch): DExcpt
1
0
1
TapeAlert (1Ch): Perf
0
0
1
TapeAlert (1Ch): Test
0
0
1
TapeAlert (1Ch): MRIE
3
0
6
TapeAlert (1Ch): Test Flag
0
0
1.
All values between the minimum and maximum must be an even multiple of 4.