wip/zimh 0.0.0.2026.07.27.00 NetBSD

ZIMH Historical Computer Simulator

ZIMH (which stands for "ZIMH Implements Machine History"), is a software emulator for important computer systems and peripherals from the history of computing. It provides a mechanism by which modern users can run and experience what it was like to use old computers that have not been made in many decades, or use software that was intended for systems that no longer exist.

(It is of course possible to also use the ZIMH framework to simulate more recent or even current machines, though this has not been the typical use case.)

ZIMH is a hard fork of SIMH, a simulator created by Bob Supnik and extended over many years by the SIMH team. We are grateful to Bob and the SIMH contributors for all of their work over the years. Without their efforts, none of this would be possible.

The development track of ZIMH is substantially different from that of the original SIMH project. In particular, this project is pursuing: ...