INT 2D - DTown Utilities v1.40+ - UTILITY INSTALLATION CHECK                    
	AL = 11h
	BL = function
	    00h get number of installed utilities
		Return: BL = number of utilities
	    01h get installed utilities
		DX:DI -> buffer containing one byte for each utility
		Return: DX:DI buffer filled with flags (0=no,1=yes) indicating
			  whether the corresponding utility is loaded
Return: AL = FFh if supported
Note:	this function is only available if the extended API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running.  Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. has been installed
	  in the resident portion
SeeAlso: INT 2D/AL=10h"DTown",INT 2D/AL=20h