Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!van-bc!ubc-cs!jalbert
From: jalbert@cs.ubc.ca (Francois Jalbert)
Newsgroups: comp.sys.ibm.pc
Subject: Add 64Kb to 640Kb
Summary: Looking for memory board
Keywords: 704Kb 64Kb Memory Board
Message-ID: <6349@ubc-cs.UUCP>
Date: 18 Jan 90 03:11:32 GMT
Sender: news@cs.ubc.ca
Reply-To: jalbert@cs.ubc.ca (Francois Jalbert)
Followup-To: jalbert@cs.ubc.ca (Francois Jalbert)
Organization: UBC Department of Computer Science, Vancouver, B.C., Canada
Lines: 25

Hi everybody. I would like to add 64Kb chunks of memory at various locations
in the 1Mb of memory addressable in the conventional way on my 640Kb 
14/10 MHz At.  I have such a board for my PC and am curious if any exist 
for AT's.

I would like to add 64Kb at:

   A000H to boost the memory available for DOS to 704Kb. I have both mono and
   CGA adapters so they won't conflict with that 64Kb. I have been running
   such a setup on a PC for many years with also both types of monitor.
   It is not too difficult to write a dummy device driver that takes care
   of letting DOS know about that extra 64Kb.

   C000H so I can modify a number of my TSR's to load there. I also
   disassembled DOS' ANSI.SYS to include 132/40 support and remove snow
   delay for my CGA. It will be simple to have it also load in there.
   I'll also compare speed of EDISK.SYS and VDISK.SYS and decide which
   one is worth disassembling and moving up there.

Please, if anybody knows of such a board, let me know. 

As usual, I'll summarize if enough interest is shown. Thank you.

                                                Francois
                                                    '