Super Punchout reset problem

flex

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Donor 7 years: 2019-2025
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The super punchout that I picked up recently has a reset problem. The game boots and will play to conclusion, as long as you dont hit the left punch button or knockout button. The left punch button works normally at the game start to enter information, but then resets the game if pushed during gameplay. I am thinking maybe it is a bad eprom, the one controlling the left punch????? Is there any list of which chips control what features??
 
If you have an EPROM programmer, the ROMs are easy to check out with ROMIDENT.

I doubt you have a bad input chip on the board if the button works to enter information.
 
I do not have one, but would like to add one soon. ANy suggestions on a good beginner model that won't limit me too much. I would like a middle of the road model.
 
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