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PDP-8-E Simulator
PDP-8-E Simulator
5.0
0.0
PDP-8-E Simulator free download for Mac

PDP-8-E Simulator

Version 2.5.1

Apple Mac DEC PDP-8/E emulator.

5.0
Based on 5 user ratesRead reviews & comments
Free
Absolutely Free

PDP-8-E Simulator overview

PDP-8/E Simulator is an emulator for the DEC PDP-8/E minicomputer running on the Apple Mac. The simulated machine is a PDP-8/E with 4K words of memory and optionally a KM8-E Memory Extension (with up to 32K words of memory) and a KE8-E Extended Arithmetic Element. I/O devices are implemented as plugin modules, and plugins for an ASR 33 Console Teletype, an ASR 33 Auxiliary Teletype, a PC8-E High Speed Paper Tape Reader and Punch, a RK8-E Disk Cartridge System, a LP8-E Line Printer and various types of Real Time Clocks are included in the distribution of the simulator. There is also a KC8-EA Programmer´s Console plugin enabling the user to operate the simulator (nearly) like a hardware PDP-8/E, including single step execution on memory cycle level.

What’s new in version 2.5.1

Updated on Mar 06 2023

A small optimization update:

  • The Memory Content and the VC8-E plug-ins now use CALayer based updates, significantly reducing the CPU load of the simulator.
  • The RK05 drives are now able to mount SIMH DECpack images (with each 12-bit word stored in two bytes) directly; the images no longer need to be converted with the s2p and p2s tools.
  • The Music Player plug-in no longer causes occasional skips of the music and avoids a deadlock in the AVAudioEngine when the simulator plays music while running at full speed.
  • The OS/8 System Disk now contains the Popcorn piece arranged by Kyle Owen (RKB0:POPCRN.MU).
  • The indicator panel and drive select lights of the TC08 are now more consistent when restarting, resetting or clearing the simulator or the PDP-8/E or when the user manually changes Status Register A.
  • Additionaly other minor bug fixes and adjustments esp. for macOS 13 “Ventura”.

Information

License

Free

Size

29.4 MB

Downloads

4906

App requirements

  • Intel 64
  • Apple Silicon
  • OS X 10.11.6 or later
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  • User Ratings

Phoenixdownunder
Phoenixdownunder
Dec 9 2019
2.2
5.0
Dec 9 2019
5.0
Version: 2.2
This is a really cool piece of fun yet serious software! Brilliant. Ahhh, thems was the days!!
arizdave
arizdave
Dec 9 2019
2.2
5.0
Dec 9 2019
5.0
Version: 2.2
Great memories. I am an alumnus of MIT and was one of the "8E" electronic designers working out of the "mill" in Maynard MA in the "60's". All us engineers and DEC President Ken Olsen were ahead "of the curve" back then.
Whisperquiet
Whisperquiet
Nov 6 2015
2.0.2
5.0
Nov 6 2015
5.0
Version: 2.0.2
Just fantastic! Brings back so many memories for me with Digital :o)
Aaron-Elkins
Aaron-Elkins
Dec 9 2014
2.0
5.0
Dec 9 2014
5.0
Version: 2.0
How cool it is.
Dylan-Mc
Dylan-Mc
Dec 9 2014
2.0
5.0
Dec 9 2014
5.0
Version: 2.0
This is an amazing resource - the PDP-8 was a real computer, but simple enough to comprehend. It was commonly used in "machine structures" curricula while those machines survived. Now they're really hard to find (I see one exactly like pictured here, in very poor condition, on eBay for $5,000), so it's great to have this simulator available. I think I'll work on a lesson plan or two based on this amazing tool. If you're curious about learning more - this hilarious video is a good place to start: http://acad.depauw.edu/dharms_web/pdp11/
Phoenixdownunder
Phoenixdownunder
Dec 9 2019
5.0
Dec 9 2019
5.0
Version: null
arizdave
arizdave
Dec 9 2019
5.0
Dec 9 2019
5.0
Version: null
Whisperquiet
Whisperquiet
Nov 6 2015
5.0
Nov 6 2015
5.0
Version: null
Aaron-Elkins
Aaron-Elkins
Dec 9 2014
5.0
Dec 9 2014
5.0
Version: null
Dylan-Mc
Dylan-Mc
Dec 9 2014
5.0
Dec 9 2014
5.0
Version: null