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From: lwall@sdcrdcf.UUCP (Larry Wall)
Newsgroups: net.micro.amiga
Subject: switch state detection
Message-ID: <3012@sdcrdcf.UUCP>
Date: Wed, 17-Sep-86 19:44:49 EDT
Article-I.D.: sdcrdcf.3012
Posted: Wed Sep 17 19:44:49 1986
Date-Received: Fri, 19-Sep-86 23:12:51 EDT
Reply-To: lwall@sdcrdcf.UUCP (Larry Wall)
Organization: System Development Corporation R&D, Santa Monica
Lines: 12

For a quizzing application, I'd like to hook 8 switches up to the
parallel interface and determine which switch closes first.  Can this
be done, and if so, what is the easiest way to go about it?  It seems
to me that if I strobe it right, I can just read the first character that
shows up on the parallel interface and see which bit is set.

I know just enough about electronics to suspect that if I short the 5v power
to the data pins I might smoke something.  Either direct advice or pointers
to how-to-do-its would be welcome.  I don't want to smoke my baby computer!

Larry Wall
{allegra,burdvax,cbosgd,hplabs,ihnp4,sdcsvax}!sdcrdcf!lwall