Print.asm isn't correct NASM assembly.

[MayNc10]

Reading through the source code of print.asm, it has notes about functions implemented in NASM assembly. Those work fine, however, lines 77, 81, 86, and 87 all give the errors "Impossible combination of address sizes" and "invalid effective address". This is on NASM 2.14.02-1, which is the version that my Ubuntu distro installed when I ran "sudo apt install NASM ".

[JohnDowson]

I use NASM version 2.15.05 which assembles it without issues.
Either way print routine isn't essential since rotth std already has putu procedure. You could safely make print: a noop.