Mobo Question

From: jpero_at_sympatico.ca <(jpero_at_sympatico.ca)>
Date: Sun Apr 1 16:08:22 2001

> Date: 2 Apr 2001 1:37:12 +0100
> From: "Iggy Drougge" <optimus_at_canit.se>
> Subject: Re: Mobo Question
> To: "Chad Fernandez" <classiccmp_at_classiccmp.org>
> Reply-to: classiccmp_at_classiccmp.org

> Chad Fernandez skrev:
>
> >EISA?? That doesn't sound right to me. Some of those computers even

Your throughts is right, aren't EISA.

That "eisa" like slot is Intel's only design on many of their LPX
boards. Not EISA standard. It's just merely a connector choices
they took for PCI and ISA risers. I'm sure your "eisa" slot riser
type LPX machines some of yours is intel LPX boards. IBM used both
by buying some boards from Intel's and making their boards as well as
standard 120pin LPX types. Sometimes lt looks like long PCI style
with pieces of straight through crackers (usually 3 of them)
between that and daughterboard slot riser. Connectors but all the
same it's just design choices.

BTW, your WDC 386sx board is standard LPX w/ 120 pin riser slot.
If you have a old IBM desktop box with 120 pin riser and standard AT
power connector pair, try these.

> Don't pay any attention to the riser connector whatsoever. Computer
> manufcaturers will just use whatever comes in handy, is cheap and plentiful.
> So of course they will use common connectors which they will have in store and
> sort out the actual expansion slots on the daughterboard.
>

Correct, Some of them are standards some aren't.

PCI spec doesn't take much pins even it has 32 traces plus other
wirings, so other pins on that "eisa" riser connector is plenty. In
fact, upper contacts is ISA in pinout, while bottom contacts are
for PCI but pinouts is not.

Cheers,

Wizard
Received on Sun Apr 01 2001 - 16:08:22 BST