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Table of Contents



Additional Information

The uPD7220 was designed by Tetsuji Oguchi, and information and schematics for the 7220 and 7220A can be found on his website:

The schematics are at

The patents for certain covering the the 7220 are: 4,459,676 - covers the accelerated bresenham curve drawing scheme

Other patents which probably cover the 7220 are: 4,356,482 4,491,834 4,545,014 4,570,222


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