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Article #698

Re: "PCI Bus Mainboard 486" & DX4-100 'Dead' ?

#698
From: David Longley
Date: Sun, 24 Dec 1995 00:00
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In article <819841158snz@briac.demon.co.uk>
           Ray@briac.demon.co.uk "Ray Hyman" writes:

> In article <819765886snz@longley.demon.co.uk>
>            David@longley.demon.co.uk "David Longley" writes:
> 
> > - PCI Bus Mainboard 486 - AMIBIOS 1994/5
> 
> Is this the one with the red (or brown) A5 sized, 3 chapter, 28 page
> manual with a little '48' and a huge '6' ?
> 
> Never heard of it !
> 
> Seriously though, J2 shorted across pins 3 & 4 will clear CMOS if it is
> the one I have the manual for.  The way I normally do it is:
>  1 - short pins 3-4
>  2 - turn the power on for 10 secs
>  3 - turn power back off
>  4 - return the jumper to its default setting for internal battery
>      across pins 2&3
> 
> I believe there is also another slight possibility of a problem, there
> are two versions of the AMD DX4, a normal one and an enhanced one.
> The enhanced one will only allow booting from a floppy with the internal
> cache turned off and can cause other assorted floppy disk problems.
> 
> Turn off the cache and they run like Amstrad PC's but never give a
> moment's problem, turn it on and if you never use floppy disks you
> might not notice a problem.
> 
> -- 
> Ray Hyman
> 
Now I've got this sorted out - can you let me have your setup? I have the
3.3V Intel DX100 and yes, the same manual. How do you rate the board?
-- 
David Longley
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From: David Longley <David@longley.demon.co.uk>
Subject: Re: "PCI Bus Mainboard 486" & DX4-100 'Dead' ?
Date: 1995/12/24
Message-ID: <819848837snz@longley.demon.co.uk>
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