Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!usc!srhqla!demott!kdq
From: kdq@demott.COM (Kevin D. Quitt)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: Loosing characters when using 80286 protected mode
Message-ID: <630@demott.COM>
Date: 2 Oct 90 15:50:36 GMT
References: <14950006@hpdmd48.boi.hp.com>
Reply-To: kdq@demott.COM (Kevin D. Quitt)
Organization: DeMott Electronics Co., Van Nuys CA
Lines: 18


    The problem with switching in and out of protected mode on a 286, is
that it can't switch out of protected mode.  Intel cleverly left off any
reasonable way to do that.  So most people who play the switching game
have to get something to reset the processor (after cleverly saving all
the pertinent info needed for a hot boot - and most of these schemes use
the keyboard to reset the processor.

    Since the reset process also takes at least 2 milliseconds, high-
speed serial communications will also be lost.

-- 
 _
Kevin D. Quitt         demott!kdq   kdq@demott.com
DeMott Electronics Co. 14707 Keswick St.   Van Nuys, CA 91405-1266
VOICE (818) 988-4975   FAX (818) 997-1190  MODEM (818) 997-4496 PEP last

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