RSTS/E and PDP 11/23 - test-drb@ccmp.vtda.org

17 May 2004

On May 17, 17:57, Fred N. van Kempen wrote:
...
  On Mon, 17 May 2004, emanuel stiebler wrote:

  Both 11/23 and the 11/23+ have 22-bit addresses.
Only very early
 revisions of the 11/23 board had 18 bit.  Oh!  I learn something every day! 
I'll check my boards, dunno
 whether I have new ones.  I do have old ones, since they're Q18. 
Original 11/23 *backplanes* are 18-bit, though they can be rewired to
be 22-bit.  AFAIR, the only 18-bit 11/23 CPU was the Rev.A KDF11-A (the
first dual-height one).

-- 
Pete						Peter Turnbull
						Network Manager
						University of York