Hi, there!
I'm using z88dk. I have a program created, Bares, for the ZX Spectrum, using cross-platform libraries only (conio.h):
http://github.com/baltasarq/bares/
So, I can create a .TAP for the Speccy and it works.
Unfortunately, I cannot do the same for the MSX. I change "+zx" by "+msx" and it always ends with the same error being unable to compile conio.h... Any clue?