Hi,
Another (3d?) PDP-11/70 emulator is now capable of using the LEDs of a PiDP11.
I've merged my blinkenlights git branch into master/main and pushed it to github (also merged the DEQNA branch for Ethernet support).
https://vanheusden.com/emulation/PDP-11/kek/
Note that you need to concurrently run the server11 program from the pidp11 package, make sure not to run the client11 program nor simh when using my emulator.
The emulator may be a bit rough on the edges, am working on that.
regards