UniBone: Linux-to-DEC-UNIBUS-bridge, year #1

Its been a long time since last public post about UniBone, time for a bragging broadcast. *What it is:* In case you forgot: UniBone is a plugin board to DEC PDP-11 UNIBUS systems containing a BeagleBone Black. See http://retrocmp.com/projects/unibone. This combo can simulate PDP-11 devices embedded in a physical machine. So you can operate and repair incomplete UNIBUS PDP-11s and even VAXes, just by emulating the missing parts. Disk drive emulators accept SimH image files, which can be ftp'd to the emulator (no SDcard changing!). As UniBone can acquire bus mastership, its also UNIBUS diagnostic console, as well as stimulate individual UNIBUS lines. Realtime stuff is implemented on BBB's PRU coprocessors. All programming is done in plain C/C++ under mainstream Debian Linux.