View Full Version : Video Pinout for TI 99/4A

October 25th, 2005, 08:27 PM

Does anyone know what the pinout for the 5pin DIN video plug is on a TI 99/4A?

I want to make an adapter calbe so I can stop using a TV and start using one of the video monitors I have here.


Terry Yager
October 25th, 2005, 08:41 PM
I don't remember the pinout, but I worked it out once, and built a couple of cables for myself. It wasn't too difficlut to figger out (not all five pins are used, just video & ground). A continuity meter will tell you which two pins are connected, and a wild guess is a 50/50 proposition for which is which on those two.


October 25th, 2005, 11:03 PM
close but no cigar, 3 pins are used ground/video/audio



October 27th, 2005, 01:02 PM
It is said that TI-99, VIC-20 and 8-bit Atari computers (maybe more) share the same video output. Maybe this is what the page refers to as "NTSC standard". I'm not sure if they really are as identical as people claim them to be; I guess it depends on which signals you connect. For example, VIC only has 5 or 6V on the pin where TI outputs 12V, which I suppose is to drive a RF modulator.