8. Drive Diagnostics
SONY AIT-1 Turbo drive SDX-470V series Ver. 1.0
8-3
Table 8-1: SEND DIAGNOSTIC Parameter – SCSI-1
Bit
Byte
7 6 5 4 3 2 1 0
0
Diagnostic Test Number
1
Break Loop
Count
Identifier
2
Parameter A
3
Parameter B
4
Parameter C
In SCSI-2 mode, the Page Format (PF) bit is one, and the Parameter List Length is 9, the Parameter List in this
case is 9 bytes long and will be of the form:
Table 8-2: SEND DIAGNOSTIC Parameter – SCSI-2
Bit
Byte
7 6 5 4 3 2 1 0
0
Page Code (81h)
1
Reserved
2
(MSB)
3
Page Length (00 05h)
(LSB)
4
Diagnostic Test Number
5
Break Loop
Count
Identifier
6
Parameter A
7
Parameter B
8
Parameter C
Break:
Indicates how to terminate the loop count should an error occur.
0 = stop on first error
1 = do not stop on error
Loop Count Identifier:
The number of times that the test should be repeated before status is returned.
0 = Continuous
1 = run once
2 = run 10 times
3 = run 100 times
4 = run 1000 times
Parameters A, B, C: Any additional parameters required to fully define the diagnostic test. These parameters are
unused and shall be 00h for all diagnostics except for tests 02, 03, and 43 to 48. These tests are described in
clause 7.2.7.
