Emulex DCP_link - Manual (Page 136)

Diagnostic Programs A-9
NOTE: A loopback connector must be used when running
external loopback tests. Refer to Chapter 3
Alternatively you may copy the diagnostics to your hard drive and load and
run from the hard drive.
1) Boot the system under DOS and insert the Emulex diagnostic diskette
into drive A.
2) Create a subdirectory on the hard disk of your choice then copy the
diagnostics to that sub directory.
3) At the DOS prompt, type
> dcpdiag3
The Diagnostic Main Menu appears. You are now ready to run the
desired diagnostics.