PDP-11/05 with RX02 :-( - test-drb@ccmp.vtda.org

9 Mar 2000

...

I have a PDP-11/05 here that works fine and boots up RT11 or XXDP on an RX01
with an RX11. When I replace the RX01 system with an RX211 and an RX02 and
try and boot RT11 the CPU hangs up at:

173546 , run light on. Requires a full reset to clear.

I have tried other RX211s, RX02s, and cables and the same problem occurs. 
To get to *real* basics:

The RX11 is a programmed I/O device.  The RX211 is (as usually used) a
DMA device.  You'll probably have to remove the NPR continuity wire across
the slot when you put the RX211 in it, and ensure that this signal is
continuous up to that far too.

-- 
 Tim Shoppa                        Email: shoppa(a)trailing-edge.com
 Trailing Edge Technology          WWW:   http://www.trailing-edge.com/
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