PPU Chips (SNES)
The SNES has two PPU chips (except on the rare 1 chip variant).
The Picture Processing Unit (PPU) consists of two closely tied IC packages. It contains 64 KB of SRAM for video data, 544 bytes of object attribute memory (OAM) for sprite data, and 256 × 15 bits of color generator RAM (CGRAM) for palette data.
The PPU chip labelled PPU1 is responsible for overlaying typically character sprites as well as other items.
When the PPU1 is faulty you will usually find symptoms such as Super Ghouls & Ghosts will be missing the player sprite but still has the background sprites.
Updated 24 Mar 2023
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