Dear Classiccmp Community, I have a Grinnell GMR-270 frame buffer for a PDP-11 to give away. It was given to me as working, but I cannot test it since I do not currently have a working PDP-11 system. It provides color 512x512 output to a monitor, which a included. Also included is the original documentation, which includes technical data and programming information. It seems that it can also act as a frame grabber. It has hardware pan/zoom functionality. It is a regular 19" rack unit, approximately a cube, and weighs around 40 pounds. I am in New York City. If you want it, come and get it. thanks, -kurt