3 Nov
1997
3 Nov
'97
11:53 p.m.
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?