Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!tut.cis.ohio-state.edu!snorkelwacker!husc6!m2c!wpi!ear
From: ear@wpi.wpi.edu (Eric A Rasmussen)
Newsgroups: comp.sys.ibm.pc.programmer
Subject: Re: extendet memory
Message-ID: <8987@wpi.wpi.edu>
Date: 23 Feb 90 05:56:36 GMT
References: <3108@tutor.tut.fi> <6570@cps3xx.UUCP>
Reply-To: ear@wpi.wpi.edu (Eric A Rasmussen)
Organization: Worcester Polytechnic Institute, Worcester ,MA
Lines: 11

In article <6570@cps3xx.UUCP> usenet@cps3xx.UUCP (Usenet file owner) writes:
>Almost every 386 board I've seen is capable of mapping the 384K between
>640K and 1MB above the 1MB mark. The AMI 386 board which I've seen in a
>lot of clones only allows you to map 256K of the 384k.

I have seen some cheap 286 clones which, when you have a Meg of ram installed,
will allow you to have 512k base + 512k extended or 640k base + 0 extended. 
Thus, if you use the second configuration, you waste 384k of perfectly good
memory, and there is no way you can get at it.  It may be that the 386 board
in question has the same stupid problem.  Unfortunatly, I don't remember what
brand or bios that machine was.