M2488 PRODUCT GUIDE

TAPE UNIT SCSI COMMANDS

4-3.20 RECEIVE DIAGNOSTIC RESULTS (FACTORY MODE) command 1Ch

The RECEIVE DIAGNOSTIC RESULTS (FACTORY MODE) command requests that result data, generated for a previous SEND DIAGNOSTIC command, be sent to the initiator.

** NOTE **

The RECEIVE DIAGNOSTIC RESULTS command as described in this section requires that the tape drive be set in FACTORY MODE.

** NOTE **

The results of the SEND DIAGNOSTIC command may be lost to another initiator on the SCSI bus if the LUN under test has not been reserved to this initiator, or if the RECEIVE DIAGNOSTIC RESULTS command is not linked after the SEND DIAGNOSTIC command.

4-3.20.1 RECEIVE DIAGNOSTIC RESULTS (FACTORY MODE) CDB Description

RECEIVE DIAGNOSTIC RESULTS is a six-byte command. The bytes are shown below and described in Table 4-84. Common fields are described in paragraph 4-3.1 on page 4-4.

 

 

 

 

 

 

 

 

 

 

 

BITS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BYTES

7

 

 

6

 

5

 

4

 

3

 

2

1

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

 

 

0

 

0

 

1

 

1

 

1

0

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LUN

 

 

 

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Allocation Length

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reserved

 

 

 

 

 

Flag

 

 

Link

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note: Changeable fields in the CDB are shaded.

Table 4-84. RECEIVE DIAGNOSTIC RESULTS Field Description

BYTE

BIT

VALUE

DESCRIPTION

 

 

 

 

0

0-7

1Ch

Operation code.

 

 

 

 

 

 

 

The Allocation Length specifies the maximum number of bytes that the initiator has

 

 

 

allocated for returned RECEIVE DIAGNOSTIC data. An allocation length of 0

 

 

 

indicates that no RECEIVE DIAGNOSTIC data is transferred. This condition is not

3-4

 

 

considered an error. The target terminates the DATA IN phase when all allocation

 

 

length bytes have been transferred or when all available RECEIVE DIAGNOSTIC

 

 

 

 

 

 

data has been transferred to the initiator, whichever is less. (Refer to Table 4-76 for

 

 

 

parameter list length values for RECEIVE DIAGNOSTIC RESULTS in FACTORY

 

 

 

MODE).

 

 

 

 

April 1997

CG00000-011503 REV. A

4-89

Page 171
Image 171
Fujitsu M2488 Receive Diagnostic Results Factory Mode command 1Ch, Receive Diagnostic Results Factory Mode CDB Description