[TUHS] AT&T 3B2/400 Emulator

Hello everyone, A few weeks ago, I merged my work-in-progress AT&T 3B2/400 emulator into the main SIMH source tree, and I realized that I should mention it here, where there may be particular interest. The 3B2 and 3B5 were main porting platforms for AT&T System V Release 3, and when I realized how scarce the equipment has become to find, I set out to write an emulator for the 3B2. It was rough going at points due to lack of documentation, but I was able to reverse engineer quite a bit of the system through reading the SVR3 source code, and of course strapping my own 3B2/310 to a logic analyzer. The emulator is fairly complete. It certainly works well as a standalone, single-user UNIX system. Support for multiple terminals is coming very soon (as soon as I find the time, that is) so it will soon be possible to allow multiple users to telnet into virtual terminals, similar to how the SIMH PDP-11 and VAX emulators work. For now, information about the emulator lives here: https://loomcom.com/3b2/emulator/ Best Wishes, -Seth -- Seth Morabito web(a)loomcom.com