21 Nov
2006
21 Nov
'06
3:42 p.m.
--- arcarlini at iee.org wrote:
I'd see it as no different to making do with a
modern fan if the
original had gone south, or replacing the bearings
with a
modern equivalent. Or even powering a C=64 from
something
that lasts longer than a day before giving up the
ghost :-)
Bad example. Bad bad bad. LOL LOL only kidding.
Replacing a fan or bearings is trivial. The piece will
no longer be "stock", and an honest person (if selling
it) would have to report it as such. But there is a
point where ya really don't have the machine really
ticking in there anymore. And you're traversing more
and more into dangerous emulation territory.
But if you get to that point and that's all you got
left, so?
The specific case mentioned was the 6120 where it
seems a
common supply mechanism is to remove them from a
DECmate
board. If an FPGA saves a DM3 I'd see that as a good
thing.
It would be an equally good thing if a handful of
chips
and a wirewrap tool achieved the same objective.
HMMMM we don't see that talked about too often.
Replacing something more complex with discrete logic.
I was tutored on replacing a part of a chip - not the
whole chip, with such, by a guy who used to work for
AT & T. I have to admit that at the time, I was
staring at him like he had 3 1/2 heads...
Not that I have a DM3 or an FPGA (but I do have
several
handfuls of chips and at least two wire-wrap tools -
one
of them mains-driven!).
Well you just be sure and put them to good use
Antonio! And ball bearings are often superior to
sleeves ;)
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