Article 2088 of alt.sys.pdp11:
Spirit in Black <chembj@jetson.uh.edu> wrote:
>I am a graduate student at the University of Houston in the Department
>of Chemistry and currently we are having problems with the PDP-11.  It
>controls out X-ray diffractometer throught the use of a PDP-8.  What I
>would like to know is if the simulators run on a DOS platform.  

I'm not sure about the particular emulators that the original
message refered to, but you can find information about several
PDP-8 and PDP-11 emulators (even a couple that run under MS-DOS) 
here:

http://www.why.net/home/adam/cem/Machine_Emulation.html#pdp-soft


-- 
Adam Roach -- adam.roach@exu.ericsson.se -- Standard Disclaimers, etc. <*>
  Like so many Americans, she was trying to construct a life that made
  sense from things she found in gift shops.
  		-- Kurt Vonnegut, Jr.