Block Responsibilities: Video Refresh, Memory Controllers
Video Refresh Controller
- Ask for data from both A and B banks, lets Memory Controllers decide best order to service
- Delegate overlay interpretation, front/back/left/right buffer fetches to Memory Controllers
- Inverse dither (digitally filter) 16-bit color data to recapture much of original 32-bit color information
8 Memory Controllers
- Independently service one of five request queues from Pixel Processor, Texel Central, or Video Refresh