PDP Emulator running BSD? - test-drb@ccmp.vtda.org

17 May 1998

On May 17, 13:09, Seth J. Morabito wrote:
...
  I have a silly question -- has anyone gotten a PDP-11
emulator (Bob
 Supnik's emulator, in my case) to run the distribution of 2.9BSD UNIX
 that can be had from sunsite.unc.edu?

 Personally, I haven't successfully gotten either to boot.  I made a
 bootable tape by dd'ing together the tape images as per the instructions,
 but it doesn't boot.  Neither does the RL02 image.  They both hang
 somewhere during the booting process and get stuck in an infinite (or
 nearly infinite, at least) loop. 
Do they really hang, or just sit waiting?  I've never used 2.9, but 2.11
normally waits for you to type CTRL-D at a critical point.  7th Edition
just prints an "@" prompt from a hardware boot, and waits for you to type
"boot" (which gives you a "Boot:" prompt, to which you'd normally
respond
"rl(0,0)unix").

Does 2.9BSD really fit on an RL02?

If they really do hang, it's possible you've run foul of a bug in the
emulator - older versions have a bug in the floating point, though I'd be
surprised if that affected booting.

-- 

Pete						Peter Turnbull
						Dept. of Computer Science
						University of York