Is there a better method of detecting a reset externally (cartridge) other than decoding a $FFFC read?
The only way I've heard of is to have the Phi2 signal charge a capacitor, and discharge when it stops clocking. I don't know the exact implementation though.
I was hoping to not use a RC circuit but yeah that's a possibility, I think a pulled up input with bypass capacitor will work but not on resets.