According to arthur wouk <awouk@blackhole.nyx.net>:
Quote:
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nice little machine: ross hypersparc 150mhz, 512mb ram, 4gig good fast drive; does not overheat. but it fails 'test net' on booting. no problem with the ethernet switch or cable.
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Hmm ... you know that the SS10 has two ethernet connections (to
a single chip)? One is the twisted pair, and the other is accessed
through one of the connectors like tiny parallel printer ports (and one
of the two actually *is* used for the parallel printer connection). The
other, marked "<...>" requires an adaptor to plug in, which allows you
to connect it to an AUI interfaced transceiver.
I forget which order they are tested in, but if the first one
tested is not there, it will report a failure on that, and then
automatically switch over to the other connector.
Quote:
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i have a couple of spare bases but i suspect problems with other things on them. however, their ethernet controllers were fine when i stored them. is the ethernet conroller a single chip which is easily transferable drom one motherboard to another? any place with instructions?
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Whatever chip it is is surface-mount soldered to the
motherboard, along with possible driver chips to actually connect to the
outside world. I don't know which chip does the task, but unless you
are set up to remove and replace surface-mount chips (it requires fairly
expensive soldering/desoldering equipment), you might as well accept
that you can't replace it.
And -- there is a fuse in the board, which provides power to the
interface and the AUI connector. If that fuse is blown, it will fail
both interfaces, I believe.
And while the older machines, like the SS-2, had bi-pin fuses
plugged into the board, the later ones (including the SS-10, I think)
had switched to fuses which look like tiny resistors, and which were
marked for factory service only. The (easy) way to check that fuse is
if you have the adaptor from the special connector to the AUI connector,
and a transceiver -- you can see whether the LEDs on the transceiver
light up.
But even if it is not *fixable* -- you can pick up a sBus card
with an ethernet interface on it, and use that instead. Often, the
cards are paired with a 50-pin SCSI interface.
An example would be the 501-1869 card, which is listed as being
good for the SS-10.
Others include the 501-2015, 501-2981, 501-1902 (50-pin
differential), and 501-2739 (10BaseT/100BaseT + 68-pin wide SCSI)
Good Luck,
DoN.
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