Very simple way to get the black screen. Your monitor will like so much. In the DOS version, CS is for the CGA/MCGA and the other one EGA/VGA. If one doesn't work, try the other one.
Tested on real MCGA and VGA hardware.
Linux version is s.cpp. The screen will be clear.
masm or uasm can be use to compile
Linux one is C++.
nobody gonna hole you hand