Commander X16 FAQ (From David Murray on Facebook)

May 22, 2019
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Hey folks!
Unfortunately, I don't have Facebook (and not planning to get one), could someone please copy paste the full answer to the Parallax question?
Short version is that people are using the Propellor chip and certain PIC microcontrollers to display video by bit banging the VGA pins. This is extremely processor intensive and sucks a huge portion of the CPU time away from actually doing computer work to display video.
 

OzWizard

New Member
Jul 19, 2019
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Short version is that people are using the Propellor chip and certain PIC microcontrollers to display video by bit banging the VGA pins. This is extremely processor intensive and sucks a huge portion of the CPU time away from actually doing computer work to display video.
Propeller chip generates VGA video by itself. No bit banging required.