Originally Posted By Rik
Your page says:
Chip labeled
MSL^ 8214

Is the 'MSL' specific to the die maybe? I also have 'Heathcliff Math' which looks exactly like this game... But the chip is labelled MP0271NLL

Is that likely a different ROM, or just some kind of batch code used when the chips are made?

MP0271 is the ROM ID, so they are identical. I think NL indicates plastic package and standard temperature range, but I'm not sure what the 2nd L is for.
I'm not sure about the "MSL" code. There are many other codes, but MSL is the most common that I've seen.

On Monkey See, the part of the case where the red and green LEDs are located is clear plastic with a sticker, almost like they were going to include a numeric display.

Last edited by seanriddle; 10/30/16 10:24 AM.