INT 15 - Object Kernel for DOS - INSTALLATION CHECK                             
	AX = 3000h
Return: AX:BX = 4F42h:4A21h ('OBJ!') if installed
	    CX = resident segment
Program: the Object Kernel is a program by M.W. Pieters which is currently
	  under development
Note:	Central Point's CPBACKUP v9 calls INT 15/AX=3000h at startup, but it
	  may be checking for a different program's presence
SeeAlso: AX=3001h,AX=3008h