
SCSI-2 Drive Command Set
Send Diagnostic Command (1DH)
Chapter 2 2-77
SCSI-2 Drive Commands
DevOfl Device Offline bit of 1 must be set for proper operation
of any test besides self-test.
UnitOfl A Unit Offline bit of 1 must be set for proper operation
of any test besides self-test.
Parameter List
Length Indicates the number of parameter bytes in the Data
Out Phase that describe the selected test. This value
must be 0 if the SelfTst bit is set to 1.
Table 2-68 Supported Diagnostic Pages
Byte 7 6 5 4 3 2 1 0
0 Page Code (00H)
1 Reserved (0)
2 Page Length (0) (MSByte)
3 Page Length (0) (LSByte)
Table 2-69 Send Diagnostic Command Page Codes
Page Code Parameter
List
Length
Description
00H 4 Supported Diagnostics Pages
(See Table 2-68 on page 2-77)
81H 12 Controller Test
(See Table 2-70 on page 2-78)
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