comp.sys.ibm.pc.hardware.misc Google Group

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neelakant...@gmail.com (pandu) — Fri, 25 Jul 2008 11:48:24 UT

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Re: BIOS CPU tests

rd...@spamcop.net (Bob Eager) — Wed, 23 Jul 2008 21:10:04 UT

Some, if not all, Pentiums have a built in CPU test. Perhaps it runs
that.

Re: BIOS CPU tests

m...@privacy.net (Arno Wagner) — Wed, 23 Jul 2008 21:02:53 UT

It is more of a relic from times when CPUs were simple
and could be meaningfully tested in a few seconds. I
don't think that can be done today.
No problem.
Arno

Re: BIOS CPU tests

marten.k...@earthlink.net (Marten Kemp) — Wed, 23 Jul 2008 20:18:49 UT

I'm wondering if the testing does anything useful.
Okay, thanks.

Re: BIOS CPU tests

m...@privacy.net (Arno Wagner) — Wed, 23 Jul 2008 16:15:55 UT

Hmm. Since the code does not to anything but display a
message, what would be the difference?
Very, very likely. The typical situation is
a single-bit fault.
Arno

BIOS CPU tests

marten.k...@earthlink.net (Marten Kemp) — Wed, 23 Jul 2008 14:00:01 UT

Having looked through the source of a couple of BIOSen
and noticed the CPU testing that they do, I wonder
about the probability of a damaged CPU working well
enough to actually execute that code but not pass the
tests.
I also wonder about the EPROM checksum testing - if an
EPROM develops an error how probable is it that the

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krishna.pedaba...@gmail.com (pandu) — Mon, 21 Jul 2008 01:09:51 UT

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satyaal...@gmail.com (nani) — Sun, 20 Jul 2008 00:23:32 UT

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Video installation
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Installation art
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ermora...@yahoo.com (Morales) — Wed, 16 Jul 2008 21:27:15 UT

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Re: Replacing Capacitors

m...@privacy.net (Arno Wagner) — Thu, 17 Jul 2008 01:14:12 UT

You need the same or higher voltage and the same (not higher!)
capacity. Here voltage is 6.3V and capacity is likely 1500 uF
(micro Farad). Higher voltage capacitors typically have
better properties.
In addition these very likely need to be "low ESR" capacitors.
This is not really a cost factor, shipping will likely cost

Replacing Capacitors

ebay.ntailor...@gmail.com — Wed, 16 Jul 2008 18:27:16 UT

If i was to replace the busted capacitors on my video card, would I
need to replace them with units that have the same specs? I have 4
busted capacitors, they are labeled "6.3V 1500".

Re: 9633 DIMMs

marten.k...@earthlink.net (Marten Kemp) — Wed, 16 Jul 2008 13:36:30 UT

This is the third phase in the "build something with all
that junk" project. Phases one and two were the XTs, which
all stopped working sometime during construction.
Need to update that webpage.

Re: 9633 DIMMs

nobody's.h...@my.place (MasterBlaster) — Wed, 16 Jul 2008 03:59:44 UT

More than all those other "interestingly named" systems?

Re: 9633 DIMMs

marten.k...@earthlink.net (Marten Kemp) — Wed, 16 Jul 2008 02:33:16 UT

Oops, it was changing "Video CoProcessor ROM/RAM"
selection to ROM.
This project has been a large pain in the fundament.

Re: 9633 DIMMs

marten.k...@earthlink.net (Marten Kemp) — Tue, 15 Jul 2008 20:48:40 UT

I changed the "Video 1mb VRAM Aperture Base Addr"
to "Disabled" in the setup. That increased the max
memory to 15872k.