Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
As I told you, original NES clock is over 21MHz. I'm sure it divides clock by 12.
And as I already said too, I did this some time ago and it worked. I think it is a problem with the oscillator.. but I can't understand why...
Add decoupling caps as stated, and maybe a heatsink. Not sure how that light load on the output would make it work?
But if it ran at 27Mhz, the person that designed it did that for some reason, maybe its max speed. So heatsink and hope that is a special chip that can take the heat.
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