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From: grr@cbmvax.UUCP (George Robbins)
Newsgroups: comp.sys.amiga
Subject: Re: Keyboard parallelogram fix?
Message-ID: <2419@cbmvax.UUCP>
Date: Tue, 29-Sep-87 02:39:28 EDT
Article-I.D.: cbmvax.2419
Posted: Tue Sep 29 02:39:28 1987
Date-Received: Thu, 1-Oct-87 02:48:39 EDT
References: <482@esunix.UUCP>
Reply-To: grr@cbmvax.UUCP (George Robbins)
Distribution: na
Organization: Commodore Technology, West Chester, PA
Lines: 17
Keywords: Where is it George?

In article <482@esunix.UUCP> blgardne@esunix.UUCP (Blaine Gardner) writes:
> Several months back George Robbins mentioned that he had a fix for the
> A1000 keyboard's parallelogram bug, but was holding off on releasing it
> for some reason. The bug has bitten me a bit lately, so I'd like to get
> hold of the fix.

This parallelogram problem, aka the "frlom" problem or 2-key rollover occurs
when three keys are depressed that share the same rows and columns in the
keyboard matrix.  The poor keyboard processor can't tell which of the two
keys at the corners of the matrix were actually pressed.  The keyboard can
be upgraded with some A500 parts,  but they have all been going into new
production.  I'll post some more information when they are readily available.

-- 
George Robbins - now working for,	uucp: {ihnp4|rutgers|allegra}!cbmvax!grr
but no way officially representing	arpa: out to lunch...
Commodore, Engineering Department	fone: 215-431-9255 (only by moonlite)