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From: tom@.berkeley.edu
Newsgroups: comp.sys.mac
Subject: NuBus interrupts - how long of pulse?
Message-ID: <14327@agate.BERKELEY.EDU>
Date: 15 Sep 88 19:55:09 GMT
Sender: usenet@agate.BERKELEY.EDU
Reply-To: tom@.berkeley.edu ()
Organization: Math Dept., UC Berkeley
Lines: 7


	I have designed an interface to the MacII using all the APDA info
that I can get.  It all works great, but with one snag.  I can't get the
Mac to recognize an interrupt.  I have been able to generate and recieve an
interrupt from a debounced switch, but from this interface, no success.  My
suspicion is that the Mac needs a longer pulse, though I am up to 200 nsec.
and that seems plenty long.  Any ideas?