Tandberg Data SLR7-140 PROGRAMMER, Руководство пользователя

Страница: 142 / 364

Tandberg Data Log Select
12-2 Tandberg SLR Product Line SCSI Functional Specifications
PCR
If the Parameter Code Reset (PCR) bit is be set to 1 and
the Parameter List Length is 0, all modifiable
cumulative counters with their DU bits, counter
thresholds, ETC and TMC fields in parameter control byte
are set to their default values (the PC-field is
ignored.).
The default value of the cumulative counters are 0
(zero). The default value of the counter thresholds is
their maximum value (FFFFh, FFFFFFFFFh etc.). The
default value of the ETC field is 0b. The default value
of the TMC field is 11b.
If the PCR bit is set to zero, the log parameters is not
reset.
SP
If the SP bit is set to 1 the Drive saves all Log
parameters identified as savable by the DS bit (after
performing the specified LOG SELECT operation).
If the Save Parameter (SP) bit is set to 0, the command
is performed and no parameters are saved.
PC
The page control (PC) field defines the type of
parameter values to be selected:
00b :
The initiator can update any or all of the LOG
SELECT parameter threshold values. New threshold
values are transferred as LOG-pages in the DATA-
OUT phase of the command. Both the pages and
parameters must be sent in ascending order by the
page/parameter code values.
01b :
The initiator can update any or all of the LOG
SELECT parameter accumulated values. New
accumulated values are transferred as LOG-pages in
the DATA-OUT phase of the command. Both the pages
and parameters must be sent in ascending order by
the page/parameter code values.
10b :
All the LOG SELECT threshold values, their ETC and
TMC control fields are set to their default
values. See the description of the PCR bit for a
definition of what is meant by default value. No
parameters are transferred and the Parameter List
Length must be 0000h.
11b :
All the modifiable LOG SELECT parameter
accumulated values and their control bytes are
reset to their default values. See the description
of the PCR bit for a definition of what is meant
by default value. No parameters are transferred
and the Parameter List Length must be 0000h.
Parameter List
Length
These two bytes specify the length of the parameter list
that will be transferred during the DATA-OUT phase of
the command. A Parameter List Length must neither result
in the truncation of any Log parameter nor exceed the
actual size of the list.
A Parameter List Length of zero is legal and indicates
that no parameters will be transferred.