I know PDT-11s are off-topic but they came up before: V6.1 of the Ersatz-11
PDP-11 emulator is now done, and the demo/hobby version is available here:
http://www.dbit.com/demo.html
This release adds emulation of the PDT-11/130 and PDT-11/150 microcomputers,
as well as a rough cut of the Terak 8510/a microcomputer (but the Terak
graphics require DOS, Windows, or OS/2 -- no Linux unless/until a better
linker turns up). There's an appendix showing how to configure each.
John Wilson
D Bit