The NES’ OAM DMA takes 513-514 cycles to copy sprites from system RAM to the internal sprite memory (OAM). The good news is, the faster 1.7MHz NES CPU spends 1282 cycles in vblank, so you can update sprites, but the amount of other stuff you can do during vblank will be pretty low.
That means a program has two parts:
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type ty = TVar of tvar | TCon of string | TArr of ty * ty | TTuple of ty list，推荐阅读新收录的资料获取更多信息
西贝工资大面积缓发、贾国龙卸任 CEO
stroke_texture: “visible pencil grain”