INT 21 - DIET v1.43e - 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 = 37D0h
	BX = 899Dh ('DI' + 'ET')
Return: AL = FFh if not present as 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. (default return value from DOS)
	AX = 0000h if installed as a 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.
	    CX = 899Dh
	    DX = version ID
Program: DIET is a transparent file compressor/decompressor by Teddy Matsumoto
SeeAlso: AX=37D1h,AX=37D2h,AX=37D4h,AX=37D6h,AX=37DFh,AX=4BF0h,AX=4BF1h