Universal Harddisk Controller for PDP-11/Hack

The odyssey of disk emulators has finally gotten to an end. At least a status where I can say, new hardware designs are very unlikely, has been reached. After many iterations of new disk emulators up to the version 3.2 for the PDP‑11/Hack and a preliminary version 4.0 I decided to use the design of the MSCP Emulator for the real Q-BUS as the base for my new Universal Disk Emulator for the…