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Article #185

Re: anyone have thoughts re ...

#185
From: Jon Loeliger
Date: Tue, 29 May 1990 14:40
60 lines
2949 bytes
> 2) how much trouble a pc532 causes with respect to EMI
>    (Is a tightly sealed metal chassis necessary, or can I get away with
>    a chassis built from popsicle sticks ?)
>    The only working pc532 I've seen (Jon Loeliger's) was surrounded by so
>    many other EMI generators that it was almost impossible to gather
>    any meaningful data regarding EMI.

Now, now, now, he explained, tongue firmly planted in cheek, I used to
have this classic hacker scene on my desk.  You know, a real *distributed*
computing environment, everything kludged together, nothing packaged,
loose wires and cables all over the place, the hip-bone connected to the
thigh-bone and the turbo charger installed.  That was back when it worked.
Now-a-days, I've got it neatly packaged in an AT case, my own, unborrowed
power supply, almost proper cabling, and no extra trash.  It looks real clean.
That's when the disks stopped working...

> 3) unexpected problems during assembly and troubleshooting ?  I've seen a
>    few mentioned on this list, but given the apparently low percentage of
>    pc532 owners with significant hardware experience, it seems likely that
>    there are some tales worth telling.  If nothing else, I'd expect at least
>    a few DOA chips, given the total number of components installed in pc532
>    systmes to date.

Not exactly an answer to the queston, but, perhaps it is time to drag the
updated version out of fluxes and distribute it so you know who to bug
directly!

Here's Jon's definitive list of claimed working systems:

	The Few, The Proud, The Living
	------------------------------

	Who			Really Who
	---			----------
	John Connin		tarpit!manatee!johnc
	Sverre Froyen		mips!fesk.seri.gov!sverre
	Bdale Garbee		bdale@col.hp.com
	Jordan Hubbard		jkh@meepmeep.pcs.com
	Ron Irvine		ron@hcr.com
	Robbin Johnson		rjohnson@kiwi.mpr.ca
	Jon Loeliger		loeliger@convex.com
	Peter P			pp@prosys.se
	Dave Rand		dlr@daver.bungi.com
	Fred's Schneider	K0YUM
	Karl Swartz		uunet!apple!zygot!ditka!kls
	George Scolaro		george@wombat.bungi.com
	Desmond Young		des@dtg.nsc.com
	Bruce Culbertson	culberts@hplwbc.hpl.hp.com>

	some other German board noted by Jordan (who's?)

As usual, if you aren't on the list and you want to be and your board
suddenly springs to life one dim 3 AM, send me a piece of mail or post
your exuberance to the pc532 list and I'll add you to the list of The Few,
The Proud, The Living.




jdl
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From: loeliger@convex.com (Jon Loeliger)
Newsgroups: comp.sys.nsc.32k
Subject: Re: anyone have thoughts re ...
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Date: 29 May 90 14:40:45 GMT
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