U2
Other components on Sega Dreamcast
About this component
Holly combines the PowerVR2 (CLX2) 3D core with the Dreamcast's system bus logic, linking the SH-4, 8 MB of video SDRAM and the G2 bus to the AICA and GD-ROM. It renders by splitting the screen into tiles and resolving hidden surfaces before texturing, and sorts translucent polygons in hardware. It runs hot under the main heatsink; GPU-related faults (no video, artefacts) often follow cooling failure. It is a large BGA package with no public datasheet.
What it does on this board
Tile-based deferred renderer @100MHz.
Pinout & readings
No pinout or reference readings yet — these show what each pin does and what a healthy part should measure.