Is anyone out there particularly familiar with the Quadras?  I'm trying to
figure out interrupt handling for the PowerMac (or Performa) 52/53/62/63xx
series, which should be closely related to some Quadra models (I have no
idea which ones except that it's non-DMA-capable, if that helps).  On the
later PowerMacs, there's a master interrupt control/flag register pair
into which all of the other interrupts are cascaded.  Is there anything
similar in the Quadras?  If not, is there anything in particular that
needs to be done to cause the IRQ line to go low or whatever after you've
read the interrupts from one of the interrupt flag registers?  Anybody?


Later,
David

David A. Gatwood                         Visit globegate's internet
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