TAPE UNIT SCSI COMMANDS

M2488 PRODUCT GUIDE

Table 4-33. Log Parameter Format

 

 

 

 

BITS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BYTES

7

6

5

4

 

3

 

2

1

0

 

 

 

 

 

 

 

 

 

 

0-1

 

 

 

Parameter Code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

DU

DS=1

TSD=1

ETC=0

 

 

TMC=0

Reserved

LP=0

 

 

 

 

 

 

 

 

 

3

 

 

 

Parameter Length = 08h

 

 

 

 

 

 

 

 

 

 

 

4-11

 

 

 

Parameter Value

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 4-34. LOG Parameter Field Description

BYTE

BIT

VALUE

DESCRIPTION

 

 

 

 

 

2

 

 

 

Parameter Control Byte

 

 

 

 

 

2

0

 

0b

The LP bit is returned as a 0b to indicate that this parameter is not an

 

 

 

 

ASCII list parameter.

 

 

 

 

 

2

2-3

 

00b

The Threshold Met Criteria field (TMC) is returned as 00b.

 

 

 

 

 

2

4

 

0b

The Enable Threshold Comparison bit (ETC) is returned as 0b, indicating

 

 

 

 

that threshold comparisons is not enabled.

 

 

 

 

 

2

5

 

1b

The Target Save Disable (TSD) bit is returned a 1b, indicating that the tar-

 

 

 

 

get does not provide a target defined method of saving log parameters.

 

 

 

 

 

2

6

 

1b

The Disable Save bit (DS) is returned as a 1b, indicating that the saving

 

 

 

 

that of log parameter is not supported.

 

 

 

 

 

2

7

 

0b

This log parameter has not caused a “LOG COUNTERS AT MAXIMUM”

 

 

 

 

condition for this page.

 

 

 

 

 

 

 

 

1b

The Disable Update bit (DU) is returned as a 1b if updating of counters

 

 

 

 

within this page is currently disabled as a result of a “LOG COUNTERS

 

 

 

 

AT MAXIMUM” condition for this log parameter.

 

 

 

 

 

3

0-7

 

08h

The parameter length field specifies the length in bytes of the following

 

 

 

 

parameter value.

 

 

 

 

 

If the initiator sends a parameter length value that results in the truncation of the parameter value, the target shall terminate the command with CHECK CONDITION status. The sense key is set to ILLEGAL REQUEST with the additional sense code set to INVALID FIELD IN PARAMETER LIST.

4-36

CG00000-011503 REV. A

April 1997

Page 118
Image 118
Fujitsu M2488 manual Log Parameter Format, LOG Parameter Field Description, ETC=0