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4.1 Mode Parameters
C141-E167 4 - 27
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
76543210
0 00001010
1 X‘0A’ or X‘06’ (Page Length)
2 TST (Reserved) GLTSD RLEC
Default00000000
Variable00000011
3 Queue Algorithm Qualifier Reserved Qerr DQue
Default 0 0 0 0 0 0 0 0
Variable 1 1 1 1 0 0 1 1
4 Reserved RAC Reserved SWP RAERP
UAAE
RP
EAERP
Default 0 0 0 0 0 0 0 0
Variable 0 0 0 0 0 0 0 0
5 X‘00’ (Reserved)
6-7 Ready Aer Holdoff Period
Default X‘0000’
Variable X‘0000’
8-9 Busy Timeout Period
Default X‘0000’
Variable X‘0000’
10-11 Extended Self-Test Completion Time
Default X‘xxxx’
Variable X‘0000’
Figure 4.7 MODE SELECT parameters: control mode parameters
The parameters defined on this page control the operations of the tagged queuing function and
statistical information function.