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PC
The Page Control field defines the type of parameter values to be selected:
Parameter
List Length
56
Commands
00b
No operation is performed. The Parameter List Length must be zero. If it is not, check
or
condition invalid field in CDB is set.
10b
01b The drive will clear logs as specified by the parameter data.
11b The drive will clear all of its internal logs.
0
No data is to be transferred. This is not considered an error.
>0 Specifies how many bytes of parameter data are to be sent. The data transferred will
consist of zero or more 4-byte log page headers with the page length in those
headers set to zero. For each log page header received, the drive clears the
associated log.
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