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cache segments are occupied by data to be retained. If the number is at least one, caching
functions in the other segments need not be impacted by cache misses to perform the SCSI
buffer function. The impact of this field equals 0 or the sum of this field plus this field greater
than the buffer size is vendor-specific.
This bit is not supported for the IDD. The IDD disregards the specification in this bit.
4.1.7
Control mode parameters (page code = 0A)
The page descriptor format of this MODE SELECT parameter is shown in Figure 4.7.
Bit
Byte
0
1
2
Default
Variable
3
Default
Variable
4
Default
Variable
5
6-7
Default
Variable
8-9
Default
Variable
10-11
Default
Variable
Figure 4.7
The parameters defined on this page control the operations of the tagged queuing function and
statistical information function.
C141-E167
7
6
5
0
0
0
X'0A' or X'06' (Page Length)
TST
0
0
0
0
0
0
Queue Algorithm Qualifier
0
0
0
1
1
1
Reserved RAC
Reserved
0
0
0
0
0
0
Ready Aer Holdoff Period
Extended Self-Test Completion Time
MODE SELECT parameters: control mode parameters
4
3
2
0
1
0
(Reserved)
0
0
0
0
0
0
Reserved
0
0
0
1
0
0
RAERP UAAE
SWP
0
0
0
0
0
0
X'00' (Reserved)
X'0000'
X'0000'
Busy Timeout Period
X'0000'
X'0000'
X'xxxx'
X'0000'
4.1 Mode Parameters
1
0
1
0
GLTSD RLEC
0
0
1
1
Qerr
DQue
0
0
1
1
EAERP
RP
0
0
0
0
4 - 27
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