Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!nic.MR.NET!srcsip!orion!lowry
From: lowry@orion.SRC.Honeywell.COM (Dave Lowry)
Newsgroups: comp.sys.mac.programmer
Subject: NuBus Interrupts
Message-ID: <17495@srcsip.UUCP>
Date: 22 Feb 89 19:33:15 GMT
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Organization: Honeywell Systems & Research Center, MPLS, MN
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Does anyone know how long the interrupt line for a slot on the Mac II
must be asserted?  

I have a logic pulser that produces a 10 usec pulse.
When I use it to request an interrupt, it doesn't seem to be recognized.
If, however, I assert the interrupt line for a second or so, I get lots
of interrupts.  Do I have to continue to assert the line while the
OS goes through the slot interrupt queue looking for a service routine?

I'm using an Adex MacProto prototyping board and Lightspeed Pascal.

Any help or ideas would be greatly appreciated.  

-Dave