You might need to factor out the TASM code hidden in pragmas in SETMODE.H first. Better yet, remove all asm and retarget for something less arcane, like Allegro

You might need to factor out the TASM code hidden in pragmas in SETMODE.H first. Better yet, remove all asm and retarget for something less arcane, like Allegro or even SDL. If you want to keep it as is, Turbo C is free online, from Borland.