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I'm used to the NES where you have to write everything yourself, such as the NMI/RESET/IRQ vectors, etc, but from what I understand the BIOS takes care of all that for you The "BIOS" in the Commodore 64 is the Kernal. The Kernal does handle IRQs and NMIs, but before it does, it indirect jumps through a RAM vector (different than the hardware 6502 ...


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