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From: grege@gold.gvg.tek.com (Greg Ebert)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: GATEA20, RESTART, and related nightmares (3/3)
Message-ID: <1835@gold.gvg.tek.com>
Date: 4 Jan 91 21:49:51 GMT
References: <1834@gold.gvg.tek.com>
Organization: Grass Valley Group, Grass Valley, CA
Lines: 10


Well, this time I can flame myself.

The PAL kludge for GATEA20/RESTART needs another state which looks for
a no-op immediately following the GATEA20 command. This no-op (and ONLY
this no-op) must also be blocked from the keyboard controller.

I can't post PAL listings in CUPL for the kludge logic because they are 
considered intellectual property by my former employer; but if I can
figure out the equations, you can too.