INT 10 - VIDEO -  SELECT ACTIVE DISPLAY PAGE                                    
	AH = 05h
	AL = new page number (00h to number of pages - 1) (see #00010)
Return: nothing
Desc:	specify which of possibly multiple display pages will be visible
Note:	to determine whether the requested page actually exists, use AH=0Fh
	  to query the current page after making this call
SeeAlso: AH=0Fh,AH=43h,AH=45h,MEM 0040h:0062h,MEM 0040h:004Eh
                                                                                

INT 10 - VIDEO - PCjr, Tandy 1000 - SET CRT/CPU(Central Processing Unit) The microprocessor which executes programs on your computer. PAGE REGISTERS
	AH = 05h
	AL = subfunction
	    81h set CPU(Central Processing Unit) The microprocessor which executes programs on your computer. page register
		BL = CPU(Central Processing Unit) The microprocessor which executes programs on your computer. page
	    82h set CRT page register
		BH = CRT page
	    83h set both CPU(Central Processing Unit) The microprocessor which executes programs on your computer. and CRT page registers
		BL = CPU(Central Processing Unit) The microprocessor which executes programs on your computer. page
		BH = CRT page
Return: nothing
Notes:	the CPU(Central Processing Unit) The microprocessor which executes programs on your computer. page determines which 16K block of the first 128K of physical
	  memory will be mapped at B800h by the hardware
	the CRT page determines the start address of the memory used by the
	  video controller
SeeAlso: AX=0580h