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mcmaster:nec:d7220d [2019/04/19 06:57] mcmaster created |
mcmaster:nec:d7220d [2023/02/16 10:17] (current) |
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| - | {{tag> | + | {{tag> |
| ====== Package ====== | ====== Package ====== | ||
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| < | < | ||
| + | NEC JAPAN | ||
| + | D7220D-1 | ||
| + | | ||
| </ | </ | ||
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| ====== Die ====== | ====== Die ====== | ||
| + | Copyright: | ||
| < | < | ||
| + | (C) NEC 1980 | ||
| + | D7220 | ||
| </ | </ | ||
| - | [[https:// | + | Label: |
| + | < | ||
| + | GDC | ||
| + | </ | ||
| + | |||
| + | [[https:// | ||
| + | |||
| + | * [[https:// | ||
| + | |||
| + | |||
| + | ====== Additional Information ====== | ||
| + | |||
| + | The uPD7220 was designed by Tetsuji Oguchi, and information and schematics for the 7220 and 7220A can be found on his website: http:// | ||
| + | |||
| + | The schematics are at http:// | ||
| + | |||
| + | 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 | ||
| - | * [[https:// | ||