I posted Entex Electronic Poker Info: www.seanriddle.com/tms1100.html

And a video for timing: www.seanriddle.com/entexpoker.AVI

This one is a TMS-1370. The only pinout I could find was a one-page diagram of various TMS chips showing the TMS-1300, but it has errors. So there's a chance my assignments are incorrect, but they mostly make sense.