Hey All, If anyone is interested, I finished a Zynq thing that plugs into the back of my PDP-8/L to provide disk, tape, tty functionality. The thing actually boots and runs OS/8! Anyway I made an Hackaday page https://hackaday.io/project/202048-pdp-8x2fl-enhancements There is also a simple RasPI based board that plugs in the front panel slot to do automated testing. About all I had to do to get the PDP running was replace a few (half dozen or so) 7400 series chips, some corroded diodes on the core stack and a power resistor. Hasn't missed a beat since. I don't know if any of you have interest in this sort of thing. I don't have a PDP-8/I but it might not be too difficult to adapt it to one of those or other PDP-8s and maybe 11s. Mike