<My mind has already been changed on this.  Now that I know a little more
<of the Qbus.  Also, the cards would be large and expensive.

Qbus cards (duals) are not that large and expensive is relative.  For 
example a RQDX3 card was not cheap but when it came out but a complete 
PC cost as much.  The difference is the RQDX wwas a complete floppy, hard 
disk and logical to physical disk protocal all on one dual card.  To do 
all there was a complete PDP-11 in the form of t11 chip with ram rom and 
lots of IO.  IT's roughly as much hardware as an XT with hd and floppy 
controller in it on and 8.5x5.25 inch card, and the XT would have not done 
the task as well.  You pay dearly for that level of technology especially 
when you consider that's an old board and when it was made the AT was the 
PC king.  It was one of those things that gave the VAX or PDP-11 is was 
plugged into a huge advantage over the PC in general performance.  there 
were other cards like this as well.

<Yeah, but there are purists out there.  I've seen a PDP11 purist that
<refuses to run one PDP11 emulator because it runs a little fast.  "It
<isn't as pure" is his actual saying.

Never heard of that.  PDP-11s have the same deal speed wise as they run 
from the slow LSI-11s to the monster 11/70s and 11/93s.

<Or just run emacs.

Only works on the old slow ones.  The later ones you need to have 25 users 
with emacs to see the effect. ;)

Allison