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From: bright@dataioDataio.UUCP (Walter Bright)
Newsgroups: net.micro.pc
Subject: Re: Memory addressing problem on PC-1
Message-ID: <983@dataioDataio.UUCP>
Date: Mon, 5-May-86 13:43:26 EDT
Article-I.D.: dataioDa.983
Posted: Mon May  5 13:43:26 1986
Date-Received: Thu, 8-May-86 21:56:34 EDT
References: <162@pecnos.UUCP>
Reply-To: bright@dataio.UUCP (Walter Bright
Distribution: net
Organization: Data I/O Corp., Redmond WA
Lines: 9

In article <162@pecnos.UUCP> jjm@pecnos.UUCP (Jim Moseman) writes:
>I have and older IBM PC with a 64K motherboard.  I have added more memory
>with a multifunction card but I can only address 544K.  The switch settings
>for 640K don't work (and weren't documented in my original Operations
>Guide).   Does anyone know a way around this?  

I had the same problem. The bug is in the ROM BIOS. Fixed it by ordering
the ROM BIOS UPGRADE KIT from the local IBM Product Service Center. It
cost about $30.