Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!apple!sun-barr!newstop!sun!imagen!atari!kbad
From: kbad@atari.UUCP (Ken Badertscher)
Newsgroups: comp.sys.atari.st
Subject: Re: timer C
Message-ID: <1613@atari.UUCP>
Date: 14 Jul 89 17:55:37 GMT
References: <531@electro.UUCP>
Organization: Atari Corp., Sunnyvale, CA
Lines: 18

ignac@electro.UUCP (Ignac Kolenko) writes:

| does GEM not like it if you screw around with the 200Hz system timer??

It does not indeed.  If you turn off the 200Hz timer for any length of
time, the AES gets very confused.  The AES uses it to time mouse double-
clicks, and even to do dispatching between accessories and the main
application.

If you're going to turn off the 200Hz timer for very long, you need to
"feed" ticks to the system to be sure that the AES doesn't lose its mind.
This is documented in the Hitchhiker's Guide to the BIOS.


-- 
   |||   Ken Badertscher  (ames!atari!kbad)
   |||   Atari R&D System Software Engine
  / | \  #include <disclaimer>