WIP DOS Game Jam Entry
So for some reason I decided to really get my geek on and make an entry for the DOS Game Jam on itch.io. Whilst the game jam rules are really relaxed, I decided to head straight for making a game for real DOS-era hardware. Then I decided making a game for mode 13h or mode X was a path too well trodden. So I started messing around in mode 12h (640x480 16 colours). First, the tools: I went for Open Watcom to build and DosBox to run it. They are both mature tools and work well on Ubuntu (Open Watcom under WINE). I very quickly decided I didn't like Open Watcom's code editor though, so I only use the IDE for building the code. Geany is a lovely little editor which I like a lot more. Thence into the dark realms of x86 interrupts to set the video mode and direct-writes to hard-coded memory locations. Coding ground to a halt immediately as I proceeded to read what felt like the entire internet . I had to learn about what an I/O port was and how to write to it , ho