Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!usc!apple!netcom!mcmahan
From: mcmahan@netcom.UUCP (Dave Mc Mahan)
Newsgroups: comp.sys.amiga.hardware
Subject: Installing an Interrupt Handler
Summary: Hooking in Interrupt Handlers for Mouse Port #2
Message-ID: <10151@netcom.UUCP>
Date: 29 Mar 90 04:42:42 GMT
Organization: NetCom- The Bay Area's Public Access Unix System {408 249-0290 guest}
Lines: 15


I am interested in programming my Amiga to receive an interrupt any time
the fire button (or left, or right, up, down, it doesn't matter.  I'm
building a circuit that can use any) changes state.  This means I want
to have a handler that gets called every time the desired button goes
from a 0 to a 1 or from 1 to 0.  I would then timetag the event and put
it in a queue for later processing.  I expect about 5000 events per second,
or I could just take the low-to-high transisitions and get 2500 events per
second.  Does anyone out there know how to program the amiga to do this?

I wish to use the second mouse port to connect to an external circuit that
provides PCM data for further processing.  Any help is appreciated.


   -dave