Heathkit H-11 restoration questions - test-drb@ccmp.vtda.org

4 Oct 1999

--- CLASSICCMP(a)trailing-edge.com wrote:
...
  The RXV11 doesn't do DMA, 
I didn't think so, but I wasn't sure.

...
  and while booting it may not need interrupts. 
Typically not in my experience with 2BSD drivers.

...
  The fact that the machine hangs solid when the card is
where it's
 supposed to be may be a clue that the it's permanently stuck interrupting. 
That's jibes with my hypothesis.

...
  Does the Heath machine at least have a
"halt" button so you can
 get down to console ODT ("@" prompt) and do further debugging from there?

Yes, but it's been years since I've ODTed.

-ethan

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