INT 2F - QRIP/TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user.  The name comes from the name of the DOS function call used to remain in memory after termination. - INSTALLATION CHECK
	AX = ACF0h
	DI = 1092h
Return: AX = 9142h if installed
	    DX = DOS-takeover flag (nonzero if QRIP able to take over DOS)
	    ---if DX nonzero---
	    BX = QRIP version number in hex (BH = major, BL = minor)
	    CX = current flags (see AX=AC01h)
Note:	if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC00h/DI=1092h,AX=AC01h,AX=AC04h,AX=AC06h,AX=AC1Ah,AX=ACFFh