HDMI ISA graphics card for vintage PCs by improving the Graphics Gremlin
 

2 years ago, I learned of an open-source project called Graphics Gremlin (GG) by Eric Schlaepfer who runs the website Tubetime.us. It is an 8-bit ISA graphics card that supports display standards like Color Graphics Adapter (CGA) and Monochrome Display Adapter (MDA). CGA and MDA are display standards used by older IBM(-compatible) PCs in the 1980s.

https://www.osnews.com/story/137030/...phics-gremlin/