RE: https://gamemaking.social/@SpindleyQ/116199294138929716

allegro ... DPMI ... mikmod ... from having worked with C64, BASIC and INT13h. This is quite what I've grown up with too ... But I had not discovered QNX before I had invested so much time into my own operating system kernel :P

curious to see what's in https://archive.org/details/gettingstartedwi0000krte, thus ...
Getting started with QNX Neutrino 2 : a guide for realtime programmers : Krten, Rob, 1965- : Free Download, Borrow, and Streaming : Internet Archive

xxx, 470 p. : 23 cm

Internet Archive
atoz.c

For more information about this program, see the example in the “Returning directory entries” section of the Resource Managers chapter.