High Quality Content by WIKIPEDIA articles! PC-MOS/386 was a multi-user, multi-tasking operating system produced by The Software Link, announced at COMDEX in November 1986 for February 1987 release. It will run much MS-DOS software on the host machine or a terminal connected to it. Unlike MS-DOS, PC-MOS/386 is optimized for the Intel 80386 processor; however early versions will run on any x86 computer.