Optical Drive and Library SCSI-2 Command Reference
SCSI-2 Drive Command Set
Receive Diagnostic Results Command (1CH)
Chapter 22-74
Receive Diagnostic Results Command (1CH) 
This command requests diagnostic test data resulting from the Send 
Diagnostic Command be sent to the initiator.
Allocation
Length  The Allocation Length field specifies the number of 
bytes allocated for returned diagnostic data. The 
controller returns the number of bytes specified or all 
available diagnostic data (10 bytes), whichever is less.
Table 2-63 Receive Diagnostic Results Command CDB
Byte 7 6 5 4 3 2 1 0
0 Operation Code (1CH)
1 Logical Unit Number 
(0)
Reserved (0)
2 Reserved (0)
3 Allocation Length (MSByte)
4 Allocation Length (LSByte)
5 Reserved (0) Flag Link
Table 2-64 Received Diagnostic Results Page Codes
Page Code Maximum 
Transfer 
Length
Description
00H 6 Supported Diagnostics Pages
(See Table 2-65 on page 2-75)
81H 10 Controller Test 
(See Table 2-66 on page 2-75)










