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From: ir332@sdcc6.ucsd.EDU (Jeff Miller)
Newsgroups: net.micro.apple
Subject: Apple IIe and IIc raster scan synchronization.
Message-ID: <2869@sdcc6.ucsd.EDU>
Date: Thu, 25-Sep-86 12:21:58 EDT
Article-I.D.: sdcc6.2869
Posted: Thu Sep 25 12:21:58 1986
Date-Received: Fri, 26-Sep-86 20:42:58 EDT
Organization: U.C. San Diego, Academic Computer Center
Lines: 13
Keywords: IIe IIc video

I need to synchronize a program with some fixed point in the video
display cycle (i.e. raster scan) on IIe's and IIc's.  I have done
this on II+'s by wiring a certain pin into the game port, and then
reading the status of the game port.  I would like to do the same
thing for the other II machines, but I don't know which pin it is
(or even whether there still is one that will work).  To boot, I
can barely solder, so don't refer me to some technical specs.
Anybody out there who can help for either machine?  Thanks.
-- 
        Jeff Miller                 ARPA: sdcc6!ir332@ucsd.edu
	U. C. San Diego             (I think)
	Dept Psychology, C-009
        La Jolla, CA  92093