nesdev.org

Thanks for your reply! Now it’s clear what happens during an NMI. The only point that I didn’t get is why the NMI is after the STA given that this istruction is executed when the vBlank is already started and the NMI is generated. So the at the end of the previous instruction there should already be...

Hi all! I have a question about how Mesen handles NMI interrupts. I tried to search on this forum without any success, so I decided to write my first post here :) I'm developing my first NES emulator using javascript, and I'm comparing Donkey Kong tracelogs from Mesen with the ones generated from my...