PDP-8-E Simulator for Mac
Apple Mac DEC PDP-8/E emulator.
Free
In English
Version 2.6When you purchase through links on our site, we may earn an affiliate commission
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 2.6
- The KC8-EA Programmer’s Console has improved display lights: until now, the state of the PDP-8/E was sampled with a frequency of 60 Hz, causing a binary flicker of the lights. Now the KC8-EA “integrates” over all signal states during the Fetch, Defer and Execute cycles and shows analog value between 0 and 1. The noticeable CPU load required for these calculations can be avoided by turning the Power key to Panel Lock.
- The OS/8 System Disk now contains this Mandelbrot set BASIC program.
- Some minor bug fixes, improvements for Swift plug-ins, removal of deprecated APIs and code cleanup. The simulator is now built with Xcode 16.1 and the macOS 15.1 SDK, it no longer runs with OS X 10.11 “El Capitan” and macOS 10.12 “Sierra”.
- This is the 30th anniversary of the PDP-8/E Simulator.
PDP-8-E Simulator for Mac
Free
In English
Version 2.6
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(5 Reviews of PDP-8-E Simulator)
Comments
User Ratings
Dec 9 2019
Version: 2.2
This is a really cool piece of fun yet serious software! Brilliant.
Ahhh, thems was the days!!
Dec 9 2019
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.
Nov 6 2015
Version: 2.0.2
Just fantastic! Brings back so many memories for me with Digital :o)
Dec 9 2014
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/