How to program DOS in graphics mode

One of my patrons on Patreon asked how to program in graphics mode on DOS, using the OpenWatcom compiler. Let's write a test program to start drawing simple shapes in 16 colors in VGA mode. This is the first half of a 2-part video. I'll post part 2 tomorrow. Visit our website https://www.freedos.org/ Join us on Facebook   / freedosproject   Follow us on Twitter   / freedosproject   Consider supporting me on Patreon   / freedos   And don't forget to Like and Subscribe! Standard comment rules apply.