TMS9918A added graphics mode 2 with 50 transistors

It's interesting to read up on the history of the TMS9918 and how they added the "super pattern graphics mode" aka Graphics Mode II with only 50 transistors. That allowed a full bitmap display to be generated with each color table byte setting a group of 8 pixels to have 2 colors out of 16.

Fascinating.



http://msx.hansotten.com/technical-info/tms9918/


The specific document being:

http://msx.hansotten.com/uploads/files/198x%20Super%20Pattern%20Graphics%20Mode%20(Mode%202).pdf