The interface to the PC's hardware and operating system primarily involves changing two files
For DOS/Win9X these files are timer.c .h and pp_dport.c .h
For WinNT,2000 they are wtimer.c .h and tdlportio.cpp .h
For Linux they are linux_timer.c .h and pp_lport.c .h Also linux_conio.c replaces the console i/o routines.
alpha linux support was added at V1.08