On Tue, Nov 10, 2015 at 07:52:51AM +0000, rod wrote: > > Now there was one interesting but little known VT100 feature. On the > back it had two BNC connectors. > They were for video in and out. You could sync the VT100 to a feed > of mono video and the overlaid > picture would appear on the screen and at the video out connector.
I actually used this once to debug a broken vt220: http://www.update.uu.se/~pontus/slask/vt220-125.jpg I could verify that the logic board of the vt220 was ok. /P
