Interphase Tech CONDOR 4221 - Manual (Page 96)

Chapter 3 - MACSI Host Interface
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Time domain reflectometry test (TDR) (p. 4-150)
This operation activates the Time Domain Reflectometry test. The result is returned in the MAC returned
information field. Refer to the 82596 documentation for full details of the returned values.
Dump 89596 internal registers (DU) (p. 4-153)
This command will cause the contents of the various 82596 registered to be transferred to the location in
system memory specified by the Buffer Address field.
Diagnose (DG) (p. 4-165)
Triggers an internal self-test that checks the 82596 hardware, and reports back a successful or failed status in
the MAC returned information field.
MAC returned information
This field may contain returned information from the MAC. Otherwise it will be set to all zeros.