INT 21 - DIET v1.43e - GET 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. CONTROL FLAGS
	AX = 37D2h
	BX = 899Dh ('DI' + 'ET')
Return: AX = 0000h
	DL = control flag (00h active, else disabled)
	DH = skip flag (nonzero while 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. active)
SeeAlso: AX=37D0h,AX=37D3h,AX=37D4h