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Article #71881

Re: Compaq BIOS

#71881
From: Peter Hayward
Date: Tue, 07 Nov 1995 00:00
35 lines
2353 bytes
In article <815692468snz@taffy317.demon.co.uk>
           Alan@taffy317.demon.co.uk "Alan P Jones" writes:

| In article <815683416snz@cdsl.demon.co.uk>
|            peter@cdsl.demon.co.uk "Peter Hayward" writes:
|
| >    I've just had a similar problem with a 1987 AMI BIOS on a 286 that
| >    did _not_ have a user definable drives.  I fixed it by blowing a
| >    fresh pair of BIOS EPROMs with the new parameters over the top of an
| >    existing one. In fact I redefined disk types 9, 10 and 11 to be all
| >    the drives I had to hand incase I wanted to use them in the future.
| >    Obviously you need access to an EPROM programmer but other than that
| >    it is simple.  It only took me a couple hours and that included
| >    writing all the programs to find/patch the tables, fix the checksum
| >    etc.  Let me know if you want to go that route and I'll send you
| >    copies of what I've got.
|
|
| I have put Phoenix ROM's in a compaq before only to get a gate A20 handler
| error and then this system hangs (I suspect AMI ROM's will do the same thing).
| You might be able to get over this problem by changing the gate A20 handler
| as it is in a socket on the compaq boards, I personally would go for another
| hard disk (maybe second hand). ROM changes on branded makes can cause a lot
| of trouble.
|
|                Alan Jones

   I suppose my offer was a tiny bit ambiguous.  I meant he could have
   my _programs_ so he could modify his own BIOS.  Nobody would
   seriously expect I meant moving a BIOS between motherboards, surely?

--
Peter Hayward, Cambridge, UK.      | In a democracy the public will only
peter@cdsl.demon.co.uk             | respect laws if they respect the
tel +44-1223-312-923               | politicians that make them.
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From: Peter Hayward <peter@cdsl.demon.co.uk>
Subject: Re: Compaq BIOS
Date: 1995/11/07
Message-ID: <815785097snz@cdsl.demon.co.uk>
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references: <815429420.8271@harewood.demon.co.uk> <815683416snz@cdsl.demon.co.uk> <815692468snz@taffy317.demon.co.uk>
organization: Cambridge Digital Systems Ltd
reply-to: peter@cdsl.demon.co.uk
newsgroups: demon.tech.pc