On 1/7/20 11:22 AM, Marc Howard wrote: > Wow, a TU55 + TC01. Were they once a part of a PDP-12? PDP-8I I have around 100 R series modules and some custom cables with scotchflex ribbon instead of the printed stuff that de-laminates available that I'm going to sell since I'll never be doing anything with negative-bus equipment in the future.