INT 62 u - FGDRIVER v4.02 - "FG_DEFPAGES" - DEF SRC/DEST PAGES FOR BLOCK XFERS
	AX = 0019h
	BX = source page
	CX = destination page
Desc:	specify the source and destination SVGA(Super VGAVideo Graphics Array) A video adapter capable of higher resolution (pixels and/or colors) than the 320x200x256 and 640x480x16 which IBMInternational Busiuness Machines's VGAVideo Graphics Array adapter is capable of producing.  See also VESA. banks for block transfers on
	  extended video pages
Notes:	the FGDRIVER functions are rearranged with each major release, but
	  their parameters do not change (see #03474)
	This function is ignored if the video controller does not support
	  extended pages or the current video mode does not allow them
SeeAlso: AX=0014h,AX=00CAh