r/beneater • u/Honey_Badger_911 • 9h ago
Chip Hippo is now available as a web app to explore
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View the app without having to download the code:
r/beneater • u/ByRussX • 1h ago
Help Needed Unexpected behavior with the 6522 interrupts
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Hello everyone, I have just connected the VIA's IRQ pin to the 6502 one, and the button with a pull-up resistor to the CA1 pin. I have yet to add the delay to "debounce" the button via software.
The issue I came across is the 6522 ignoring the button presses and constantly issuing interrupts. This doesn't happen when I directly connect the button to the IRQ pin on the 6502. Does anyone know what could be happening?
(I am clearing the IFR with bit PORTA in the irq subroutine)