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CosmicRLe 26/12/2020 à 18:55
This is really great! Hope you keep improving it into a full game. I have always wonder why so few (almost zero) super scalar games on the Neo Geo? Only thing that comes to mind is that changing the sprite priorities is a pain (and slow).

Just looking at the code you posted - you can speed it up further by setting the timer to skip over the first N lines of the screen - until the effect starts. There is no need to have timer interrupts happen at all on lines where there is no 'effect'. They are quite slow in themselves