You are right it is clock only, I just turned it on. It has been such a long time since I last used it.

Regards
Nick

Sorry, I had edited my post a few minutes ago to request a photo of the front side of the LCD PCB. If you have to do it all over again, never mind, I don't want to burden you. =)

No worries, here it is. It is about as big as I can get it.



Regards
Nick

Thanks, definitely software-controlled display. No LCD driver chip indeed. I didn't realize at first that it's actually 2*2 ribbon cables on top of each other.

Strange that they didn't solder the LCD panel.

The Supra only has 1 LCD compared to Royal, so I guess it only tracks time for white? Or does it switch to black's total time when it's the computer's turn?

It switches from white to black and so on, total time.

Regards

LCD panel is 34 pins. 2 outputs from ribbon cable go to 2 LCD corner pins, possibly VCC/GND.
Then 15 outputs each go to 2 LCD pins, very odd.
2 LCD pins are N/C.

The LCD has 4 7-segment digits, or does it have more segments? Like a blinking colon (I didn't see any on photos online), or DP (display point, at bottom-right of a digit).

I don't see any blinking colons. It counts from right to left. Once it gets to sixty it switches to the third digit and shows a 1 the fourth digit remains at zero so you have to wait to 10 minutes before the 4th digit would change. I don't want to run it that long but the 4th digit probably goes to 99 minutes before it goes back to zero. (That's my guess).

From a display perspective you have two left digits and two right digits with a small gap in the middle that is dark (no ticking dots).

When the computer is thinking it has a small LED called "Think" that lights up red. There are 4 small LEDs there from top to bottom called "Level" "Set-UP" "Think" and "Threat".

Regards
Nick