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
Developer’s website
https://www.bernhard-baehr.de/pdp8e/pdp8e.htmlDownloads
4849
App requirements
- Intel 64
- Apple Silicon
- OS X 10.11.6 or later
