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Article View: comp.sys.ibm.pc.hardware.misc
Article #664

Octek Chipset based VLB Board: Clock running Fast ??

#664
From: David Longley
Date: Thu, 18 Jan 1996 00:00
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I've been working on a VLB Octek Chipset based motherboard with a 
486-25SX  which  has been run at 33MHz in the past.  BIOS  is  MR 
BIOS.

Problem 1) - If the system is left on for about 30 mins and  then 
             switched off and back on, after the setup delay  and 
             memory check, the system puts up a message saying it 
             is  waiting  for the hard disk to spin up  and  then 
             just times out.  Poking  around  inside at  the  VLB
             video  card/HD  controller (multifunction  card  (it 
             will come back to life.

Problem 2) - It looks like the system time  clock  is  running 
             rather fast, the seconds look like they're passsing
             twice as fast as they should.

At  the  moment I have 2 70ns 30 pin SIMMs in the  system  and  2 
100ns 30 pin SIMMs. (I know the latter are slow, but they seem to 
pass the POST. I have now put the system back to 25MHz.

Are  the two problems above related? What do I have to change  to 
correct the system clock problem? ie what's the chip? 

Alternatively, anyone got a 486VLB board they are throwing out?
-- 
David Longley
Technical Details
Message-ID: <821933493snz@longley.demon.co.uk>
Path: arc1-ca.pugleaf.net!unknown!not-for-mail

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From: David Longley <David@longley.demon.co.uk>
Subject: Octek Chipset based VLB Board: Clock running Fast ??
Date: 1996/01/18
Message-ID: <821933493snz@longley.demon.co.uk>
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organization: Relational Technology
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