INT 10 - VESA(Video Electronics Standards Association)  An industry group which sets both hardware and software standards and recommendations. The term VESA is also used to denote compliance with the VESA SuperVGA BIOS Extensions, a standard set of video BIOS functions for accessing video modes of higher resolution than those defined by IBMInternational Busiuness Machines. VBE(VESA BIOS Extensions) The common software interface for video cards providing support for high resolution and bit depth./AF (Accelerator Functions) - 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.
	AX = 4F17h
	BL = function
	    00h installation check / get capabilities
	other registers vary by function
Return:	AL = 4Fh if function supported
	    AH = status
		00h successful
		01h failed
		02h hardware does not support function
		03h function not available in current video mode
		else reserved for future error codes
	other vary by function
Notes:	the accelerator function code should be given a 32-bit protected
	  mode stack which has at least 1024 bytes available for use by the
	  VBE(VESA BIOS Extensions) The common software interface for video cards providing support for high resolution and bit depth./AF code
	when called, the I/O permission bitmap must allow access to any
	  ports which VBE(VESA BIOS Extensions) The common software interface for video cards providing support for high resolution and bit depth./AF may require for operation
SeeAlso: AX=4F0Bh