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S-PPU1

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S-PPU1 die shot with regions numbered

S-PPU1 is the first of the two PPUs in 2chip consoles. It has part number 21322. Little is known about how S-PPU1 works; for most regions of the die there is only speculation about their function.

Legend

1 & 2 - OAM
5 & 6 - Sprite Line Buffer
10 - combining sprite + layer?
12 - registers?

See Also

S-PPU2

References

https://forums.nesdev.org/viewtopic.php?p=279840#p279840
paragraph 22.2 on page 2-22-1 of Book I of the official Super Nintendo development manual

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