J. Peterson updated a PDP-11/70 console with an ethernet controller and a CPLD to control the blinking LEDs:
I’ve always missed that visual and tactile aspect of computers that’s been lost since the advent of microprocessors. When a console for a PDP-11/70 came up for sale on Ebay, I couldn’t resist the opportunity to bring it back to life.
I used a Zilog EZ80F91 based Ethernet controller along with a Xilinx XC95108 CPLD to hook up all the lights and switches and make them controllable over the net.
Thanks J. Peterson! Via the comments.