This APIs are for Borland C/C++ 4.5 DPMI 16/32 bit interfaces and work under Borland C/C++ 4.5 and PowerPack for DOS 1.0 enviroment.
Note, since Borland C/C++ 4.5 's DOS extender doese not I/O and DPMI in WinNT/2000, these APIs do not support WinNT/2000.

