INT D4 O - PC-MOS/386 v5.01 - OBSOLETE FUNCTIONS
        AH = 00h and 01h
Return: nothing
Desc:   PC-MOS/386 v5.01 reports that these functions are no longer supported
          and enters an endless loop
Program: PC-MOS/386 is a multitasking/multiuser MS-DOS-compatible operating
          system by The Software Link, Inc.

.