Bernhard Baehr’s freakin’ awesome Mac OS X-based PDP-8
simulator. This thing can pretend to be a PDP-8 you can only dream of :)
Stack the DEC: devoted to the PDP-8, 06.09.2009
PDP-8/E Simulator does a fantastic job of bringing the PDP-8 to life on
your desktop, offering more functionality than the original.
MAKE magazine, vol. 5, 2006, p. 182
Boy oh boy!
You want to see a nice, operational simulation of a running antique computer?
This one is nicely refined.
Dave Lion in his
of the PDP-8/E Simulator, without date (found 15.01.2006)
Fantastic - that’s all I can say.
“Hans” from Austria at
Paul Norman at
This certainly brings back memories!
(in 1965, author of the PAL III assembler for the PDP-8) at
It’s amazing, innovative software like this that allows us
“modern” computer users to get a good taste of what computing
was like back in
the good ol’ days!
Everything works great and I am once again enjoying being able to run a
PDP/8 machine using OS/8. Your emulator works great.
Private e-mail from Bill Tello, 04.11.2001
If you don’t own a PDP-8 (sadly, nor do I), I can highly recommend
Bernhard Baehr’s slick PDP-8/E Simulator for Macintosh, which apart
from being attractive and usable, has the impressive virtue of running
on all system software versions from 2 through OS X.
I am very impressed that the accuracy of the implementation even
duplicates the input buffer overflow condition when reading paper tapes in
FOCAL. You sure put a lot of authenticity in the emulation.
Private e-mail from Stephen Holland, 09.08.2001
I really got a kick out of loading up the emulator on the Mac.
[...] The effect of turning off the power is hilarious!
Private e-mail from Stephen Holland, 07.08.2001
Kudos on your PDP-8 Simulator
I’ve been really amazed by your emulator, and I took it to a recent DEC
collectors’ group meeting, where people really liked seeing it.
Today at The Computer Museum, there was a retrospective on Digital
Equipment Corporation, and many people were there. I took it to show it off
again, and showed it to a number of amazed people, including Ritchie Lary,
the OS/8 author, who was very, very impressed.
Private e-mail from Jon Callas, 17.06.2001
I have experienced your PDP-8/E Virtual Machine Environment and found it
Private e-mail from Aaron Harwood, 28.02.2001
Emulate-em for the mind
Here’s a line that ought to strike fear into the hearts of many:
“The PDP-8/E and the I/O devices can completely be controlled using
AppleScript.” Where the heck did this come from? From an announcement
about the latest version of a PDP-8/E simulator for the Mac. For those of
you too young or too insular to know what this is, it’s history,
baby! Without Digital Equipment’s PDP foray into the minicomputer
scene, much of what we know as personal computers today would be much, much
And as a note to Mac developers - beat this! “It runs on 68K and Power
Macintosh computers with System 2 to Mac OS X Public Beta and on the
Macintosh emulator vMac.”
For OS X, a REALLY Retro Interface
Nobody gave it to you for Christmas, so you’ll just have to give yourself
this PDP-8/E emulator. Fortunately it’s free, GPL’d,
Dr. Dobb’s Journal, 01.01.2001
Roger Ivie in alt.sys.pdp8, 23.12.2000
Definitely a slick piece of work.
Roger Ivie in alt.sys.pdp8, 25.02.2000
I’ve been playing around with your PDP simulator,
and I just wanted to say that you’ve done a really great job!
Private e-mail from Huck Dunsany, 28.10.1999
God bless you and your PDP8 simulator
Private e-mail from Bill Coderre, 17.02.1998
Very cool! Finally a good use for the Mac! :)
Private e-mail from jankowiak(?), 16.02.1998
Looks like a nicely done simulator.
Private e-mail from Bob Grant, 28.12.1996
I have got the simulator working on my SE - it’s wonderfull!
Private e-mail from Doug Peksa, 02.08.1996
Thanks for sending me a copy... it works wonderfully,
and I am very happy.
Private e-mail from David S. Bennahum, 08.07.1996
Congradulations! [...] Many Thanks for an interesting project!
Private e-mail from Steve Cavrak, 03.01.1996
I’d like a copy of the simulator. I have the previous version, and
Private e-mail from Patrick Scheible, 20.12.1995
Private e-mail from Iain Hardcastle, 06.07.1995
I finally got some time to play with your simulator. Very Nice!
Private e-mail from Dave Murphy, 27.02.1995
Und Danke und WOW! und Respekt: Dieser Simulator ist an liebevollem
Detail wohl kaum zu überbieten. Die bunte Aboutbox läßt
regelmäßig mein Herz schmelzen :)
Private e-mail from Helge Horch, 23.01.1995
I’ll play around with it and see how it works
(although it looks pretty good).
Private e-mail from Peter J. Weingartner, 12.12.1994