>>11673795
>since code in 6502 assembly is fucking small

In fact 6502 code is rather bloated, it takes a lot more instructions than Z80 code and that was part of the reason for the NES's peculiar architecture.

>ROM space was limited in the early 80s with 16k being the largest available size
>6502 code takes 20% on average more space than Z80 code
>by placing the graphics in a separate ROM they would not take up valuable space in the PRG ROM
>it's also faster and they didn't have to compress or de-pack tiles, and the 6502 had less CPU power for this than Z80

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