Darnit! UDA50 problem.

From: Daniel A. Seagraves <dseagrav_at_bsdserver.tek-star.net>
Date: Tue Nov 4 07:53:37 1997

On Tue, 4 Nov 1997, Tony Duell wrote:

> Remember he has an M9302 terminator. That card will lock up the bus
> (actually it asserts SACK and keeps it asserted) if the grants are not
> continuous.

Hmm... That doesn't appear to be happening... Will the CPU run at all
like that? It boots RT-11 from the RX02 okay...

> On the other hand, having an NPG jumper (the little wire-wrap between pins
> CA1 and CB1) where you shouldn't have one will cause all sorts of
> problems. I'm pretty sure that a UDA50 is an NPR (== DMA) device - did you
> cut the jumper when installing it?

You don't mean the CGJ card, do you? There's something else I'm supposed
to have screwed with. You mean I have to cut one of the wire-wraps on the
backplane? That doesn't sound like a good idea... is that correct? When
I get to work, look for a wirewrap jumper from CA1 to CB1 on the
backplane?
Received on Tue Nov 04 1997 - 07:53:37 GMT