Hi,
when I was experimenting with dev86/bcc, I have written a small pong
game that runs on bare metal PCs without DOS as well as on DOS, it uses
only BIOS Interrupts.
upxed it is only 1491 bytes, extracted 2528.
The source quite easy to unterstand I think and this very short project
shows on how to use bcc from linux to produce .com files, as well as
some inline assembly (incl. calling convention), video output, keyboard
input, simple delay.
This page contains a bit longer description, screenshots, sources, bins:
https://github.com/spacerace/x86-pong
If you like you can include to FreeDOS.
Nils
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