I wrote a small C program for this graphics card.
It is a CGA model which was used in early 1980s!
After a while it really works.
A lot of effort is required to set a single pixel.
320×200 in 4 colors…
Borland C++ is used but this program is just plain C language.
Tables are used to set and reset the bit patterns.
For sure there are more efficient ways to set pixels on CGA adapters.
I wrote it just for fun. It is so old fashion, it needs DOS to work.
For demonstration, I draw 3 distinct color bars.
16 Kilobytes are used in CGA mode.
The card in my laptop has 16 Megabytes already.