INT 2D - DTown Utilities v1.40+ - POP UP                                        
	AL = 21h
	BL = which utility to bring up
	    00h active utility
	    01h help screen
	    0Ah ASCII table
	    0Bh memory view
	    0Ch CPU(Central Processing Unit) The microprocessor which executes programs on your computer. status
	    0Dh calculator
	    0Eh miscellaneous
	    0Fh file viewer
	    10h disassembler
Return: AL = status
	    00h already active
	    FFh popped up successfully
	BX = 0000h
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,INT 2D/AL=50h