INT 62 u - FGDRIVER v4.02 - "FG_GETXPOS" - GET GRAPHICS CURSOR COLUMN
	AX = 0054h
Return: AX = screen space X coordinate of graphics cursor position
Note:	the FGDRIVER functions are rearranged with each major release, but
	  their parameters do not change (see #03474 at AX=0000h)
SeeAlso: AX=0058h,AX=007Eh,AX=007Fh