The VDP, or Video Display Processor, is the graphics chip in the SMS and GG. It is based on the TMS9918a, used as-is in the SG-1000 and SC-3000, but with extensions via a new mode.
There are plenty more waiting to be written.
Collision Detection Compression Control Port GG Palette Programming Techniques Registers Scanline Counter SMS 1 SMS 2 Tilemap Mirroring TMS 9918 TMS9918a TMS 9918 Arizona Technical Symposium Draft TMS 9918 Master Timing Diagram TMS 9918 Patent TMS 9918 Pattern And Sprite Processing VDP
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