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3-86 M3099GX/GH OEM Manual
MODE SELECT(6) Command
The MODE SELECT(6) command (Table 3.66) provides a means
for the initiator to specify medium, logical unit, or peripheral device
parameters to the target. Targets that implement the MODE
SELECT command shall also implement the MODE SENSE
command. Initiators should issue MODE SENSE prior to each
MODE SELECT to determine supported pages, page lengths, and
other parameters.
Table 3.66 MODE SELECT(6) Command
Bit
Byte
0
1
2
3
4
5
7 6 5 3 2 1 0
Operation Code (15h)
Reserved
Reserved
Parameter List Length
Control
Logical Unit Number Reserved
4
PF SP
If an initiator sends a MODE SELECT command that changes any
parameters that apply to other initiators, the target shall generate a
unit attention condition for all initiators except the one that issued
the MODE SELECT command(see ANSI SCSI-2 7.9). The target
shall set the additional sense code to MODE PARAMETERS
CHANGED.
PF(Page Format): 1b(SCSI-2 format)
SP(Save Pages): 0b(not save pages)
Parameter List Length: 12(Lamp timer), 12(Job separation sheet)
This field specifies the length in bytes of the mode parameter list that
shall be transferred from the initiator to the target during the DATA
OUT phase. A parameter list length of zero indicates that no data
shall be transferred. This condition shall not be considered as an
error.
#03.pm5 98.2.22, 1:33 PM86