How do I convert my Nibbler PCB from Version 9 to version 6?

disjaukifa

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How do I convert my Nibbler PCB from Version 9 to version 6?

Hey Guys,

I just got another Nibbler, finally, but it has version 9 on it, and I'm wanting to put version 6 on it. I replaced the 9 EPROMs in that the manual talks about IC7, IC8, IC9, IC10, IC12, IC14, IC15, IC16, and IC17 but when I start the game, it still says it's version 9 no the boot screen.

I've tried searching on here and on google for I haven't been able to find any information!

If anyone can point me in the right direction I would appreciate it!

Thanks
Grant
 
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