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Article #32147NuBus interrupts - how long of pulse?
From: tom
Date: Thu, 15 Sep 1988 19:55
Date: Thu, 15 Sep 1988 19:55
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827 bytes
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?
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arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!ukma!nrl-cmf!ames!pasteur!agate!.berkeley.edu!tomShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!ukma!nrl-cmf!ames!pasteur!agate!.berkeley.edu!tom 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