U3
Sega 315-5890
GPU
Background processor
Used on 1 board
Open a board to see where this part sits on it.
About this component
VDP2 generates the scrolling and rotating background planes and mixes them with VDP1's frame buffer to produce the output picture. It holds 4 KB of colour RAM and has its own VRAM. If the console boots but backgrounds are corrupt or the picture has no sync, VDP2 or its VRAM is a likely culprit. Part variants: 315-5890 on earlier small-board revisions; 315-5964 on the single-board VA7 and later. Earliest units reportedly use 315-5690.
What it does on this board
Handles scrolling backgrounds and effects.
Pinout & readings
No pinout or reference readings yet — these show what each pin does and what a healthy part should measure.