I stand corrected- in an interesting coincidence, I got 2 Entex card games today; Electronic Poker and Black Jack / Gin Rummy. They are essentially the same hardware; an 11-digit 8-segment VFD with symbols for the 4 suits around each digit, and a 40-pin TI SDIP. I torched one open and it's a TMS-1400 (probably actually a 1470, since the games have VFDs). I'll post more info later.
Edit: I guess technically the 40-pin VFD version is the TMS1670, but the die is labeled TMS1400.