Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uwm.edu!ux1.cso.uiuc.edu!usenet
From: dat33228@uxa.cso.uiuc.edu
Newsgroups: comp.sys.apple2
Subject: Timing problem
Message-ID: <1990Jul24.170152.13125@ux1.cso.uiuc.edu>
Date: 24 Jul 90 17:01:52 GMT
Sender: usenet@ux1.cso.uiuc.edu (News)
Organization: University of Illinois at Urbana
Lines: 17


  What's the best way to execute a 2 microsecond delay from 16 bit native mode
(65816) when you don't know what your processor speed is?  I want to place
a delay between two toggles of an annunciator (game connector) on the IIgs,
and I want a steady pulse time regardless of whether I'm in normal, fast, or
transwarp mode.  Should I opt for an external hardware device or can I check
one of the internal clocks?  This program will ultimately end up in the
heartbeat manager, interrupts by VBL every 16.6667 milliseconds.


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                                                                             .
 Derek Taubert --> derek@mrcnext.cso.uiuc.edu  ||  dat33228@uxa.cso.uiuc.edu .
 Anyone who programs or has an idea for a program for the IIgs, PLEASE send  .
 me mail!                                                                    .
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