Digital Equipment DEC 3000 600 AXP, Service Information

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NI Diagnostic
Testing under service mode provides a full complement of
patterns rather than a single pattern. Additionally, the full
addressing range is tested for DMA read/write access.
Running NI
Diagnostics Before testing, a loopback connector (PN 12-22196-01) must be
connected to the NI port or the port must be directly connected
to the network. Failure to do so results in an external loopback
failure. You must also verify that Thickwire has been selected.
To select and execute the NI diagnostic or subtests, enter the
following:
>>> T[EST] {device name} [sub-test]
Return
Example The next example selects and executes the NI diagnostic.
>>> T NI
Return
This example selects and executes the NI diagnostic NAR
sub-test.
>>> T NI NAR
Return
Subtests Refer to Table 4–14 for a list of diagnostic subtests.
Table 4–14 NI Diagnostic Subtests
Sub-Test Description
NAR Network address ROM test
REGISTER LANCE Register test
DMA_INIT Initialize LANCE and test DMA logic
test
ILPBK Internal loopback and DMA test
INTERRUPT Interrupt test
EXT_LPBK External loopback test
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