QUADTEL BIOS AND DOS 5.0

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#10557

From: Damian Kennedy
Date: Sat, 21 Nov 1992 01:00

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I am currently experiencing an *interesting* thing.

When I boot the below system under MS-DOS 3.3 the A20 defaults to disabled (as you would expect it should with no HIMEM.SYS loaded). BUT when the exact system is booted on MS-DOS 5.0 the A20 is defaulting to enabled and I am unable to disable it.

Has anyone else encountered this problem??
Anyone got any ideas on how to disable the A20.?? A piece of software I have  
requires the A20 be disabled when it initilizes the keyboard on installation.

80386SX/20
5MB DRAM
QUADTEL BIOS and KEYBOARD BIOS.

The boot disks I am using only contain IO.SYS/MSDOS.SYS and COMMAND.COM they are nice clean simple boot disks.
 
KENNEDY_D@KOSMOS.WCC.GOVT.NZ

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From: kennedy_d@kosmos.wcc.govt.nz (Damian Kennedy)
Newsgroups: comp.sys.ibm.pc.misc
Subject: QUADTEL BIOS AND DOS 5.0
Date: 21 Nov 1992 01:00:19 GMT
Organization: Wellington City Council (Public Access), Wgtn, Nz
Lines: 15
Message-ID: <1ek1n3INNf5l@golem.wcc.govt.nz>
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