Exabyte EXB-8205 Betriebsanleitung PDF herunterladen (Seite 135)

100

101

Byte 02, Bits 5 through 0; Bytes 03 through 06 – Reserved

These bits and bytes are reserved.

Bytes 07 and 08 – Parameter List Length

The Parameter List Length field indicates the number of bytes in the

parameter lists that the initiator will send during the Data Out phase.

The Parameter List Length must equal the sum of the lengths for each

log parameter plus four bytes for each Parameter List Header. If a

parameter list is transferred, it must be transferred in its entirety.

Valid values for this field are 0 to FFh (0 to 255). If the Parameter List

Length is 0, no data is transferred.

Note: If the Parameter List Length is greater than 0, the PCR bit

must be 0. Otherwise, the CTS returns Check Condition status

with the sense key set to Illegal Request (5h), the ASC and

ASCQ set to 24h and 00h, and the Fault Symptom Code set to

CEh.

Byte 09, Bits 7 and 6 – Vendor Unique

There are no vendor unique definitions for these bits.

Table 8-1 summarizes the valid settings for the PCR, PC, and

Parameter List Length fields in the LOG SELECT CDB.

To set...

Set the PCR bit

to...

Set the PC field

to...

Set the

Parameter List

Length to...

Specified counters to new threshold

values

0 00b

The number of

bytes in the

parameter lists

(from 0 to 255)

Specified counters to new cumulative

values

0 01b

All counters to default threshold

values (do not reset cumulative

values)

0 10b

All counters to default cumulative

values (do not reset threshold values)

0 11b

All cumulative counters to 0, all

thresholds to FFs, and ETC to 0

ignored

Table 8-1 Valid combinations of values for the fields in the LOG SELECT CDB

May 1994 EXB-8205 and EXB-8505

(Standard and XL)

8-5

8 LOG SELECT (4Ch)

1 2 ... 130 131 132 133 134 135 136 137 138 139 140 ... 445 446

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