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SCSI Commands
Field Descriptions
Data Compression Control Page
Field Descriptions
6
7
Field
Bytes
Bits
Page
0
0-5
Code
Additional
1
Page
Length
RLEC
2
0
DQUE
3
0
Auto Load
5
0-2
Mode
Reserved
The Data Compression Control Page specifies whether or not data is compressed
during Write commands and whether or not data is decompressed during Read
commands.
Bits
Byte
7
6
0
Reserved
1
2
DCE
DCC
3
DDE
RED
4
5
6
7
8
9
10
11
12
13
14
15
Field
Bytes
Bits
Page
0
0-5
Code
Additional
1
Page
Length
Reserved
Reserved
Description
Always 0Ah, indicating the Control Mode Page.
Always 06h, indicating that 6 parameter bytes follow the Page
Length byte.
0 = Drive does not Report Log Exception Conditions (RLEC) (de-
fault).
1 = Drive Reports Log Exception Conditions (RLEC).
Always 1, indicating that Tagged Queuing (DQUE) is disabled.
000b = Load inserted medium for full access.
001b = Load inserted medium for medium auxiliary memory access
only.
010b = Do not load inserted medium.
All reserved bits must be 0.
5
4
3
Page Code (0Fh)
Additional Page Length (0Eh)
Reserved
Reserved
Compression Algorithm, MSB
Compression Algorithm
Compression Algorithm
Compression Algorithm, LSB
Decompression Algorithm, MSB
Decompression Algorithm
Decompression Algorithm
Decompression Algorithm, LSB
Reserved
Reserved
Reserved
Reserved
Description
Always 0Fh, indicating the Data Compression Control Page.
Always 0Eh, indicating that 14 parameter bytes follow the Page
Length byte.
Page 57
2
1
0
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