User's Guide

Page 124 DDS-4 SCSI Interface Manual, Rev. B
RECEIVE DIAGNOSTIC RESULTS (1Ch)
The RECEIVE DIAGNOSTIC RESULTS command requests any available analysis
data is sent to the initiator after completion of a SEND DIAGNOSTIC command. The
drive does not use any of the optional diagnostic page data; thus, no data is
returned with this command.
RECEIVE DIAGNOSTIC RESULTS Command Descriptor Block
The following table shows the layout of the CDB.
Byte
Bits
7 6 5 4 3 2 1 0
0 0 0 0 1 1 1 0 0
1 0 0 0 0 0 0 0 0
2 0 0 0 0 0 0 0 0
3 MSB—Allocation Length
4 Allocation Length—LSB
5 vendor unique* 0 0 0 0 Flag Link
* This vendor-unique field is reserved and must be set to zero.
Command Descriptor Block Field Description
The following table defines the fields in the CDB.
Field
Name Bytes Bits Description
Allocation
Length
3-4 The drive returns 8 bytes of data with results from the last self-test.
The following table shows the Diagnostic parameter values.
Value Description
00 Page code (80h)
01 Reserved (00h)
02 Reserved (00h)
03 Additional length (04)
04 Last successful test
05 Error code
06 FRA
07 Tape load count
If the Enhanced Diagnostics were not invoked before the RECEIVE DIAGNOSTIC
RESULTS command, the last successful test field (byte 4) is set to 0.
If the Enhanced Diagnostics were invoked before the RECEIVE DIAGNOSTIC
RESULTS command, the last successful test field (byte 4) is set to 7. If a failure