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Hi,
I have a Two-Bit Super ABC 16 game kit that I bought from someone a few years ago and just now getting around to installing it in my Ms Pac-Man cabinet.
as I recall the person never installed.
So while going through the instructions everything seems pretty straight forward.
until I got to step four.
In my kit I have three chips two that are marked 4A & SN74LS161AN When it should have had one for 4A, 7F & SN74LS161AN
Could this be a typo?
After looking at the chips closer I knotted down the paint pen ink off the top to read the chips as you can see and they are different.
Chip1: MB7052 Japan 8347 M56
Chip2: MB7052 Japan 8348 M56
But are they really different, So am I okay in putting the other 4A in the 7F socket.
If so what one do I put in 4A 7F location on the PCB?


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