Memory command problems

@all,

Look at the code below. I am trying to retrieve how much memory is available on my graphics card. I tested with a 2Mb graphics card but the code below I have done returns 16Mb ??? WHY?? Please advise!

Function Display_GfxMemory()

Local		Gfx_TotalMem%	=	0
Local		Gfx_FreeMem%	=	0

		Gfx_TotalMem = TotalVidMem()
		Gfx_FreeMem = AvailVidMem()

		Text (Cursor_XPos,Cursor_YPos,"Total Graphics Memory   : ", False,False)
		Text (Cursor_XPos,Cursor_YPos,"                          " + Gfx_TotalMem + " " + "(Bytes)" + " " + (Gfx_TotalMem / 1048576) + "Mb",False,False)
		Cursor_YPos = Cursor_Ypos + Cursor_Size
		Text (Cursor_XPos,Cursor_YPos,"Free Graphics Memory    : ",False,False)
		Text (Cursor_XPos,Cursor_YPos,"                          " + Gfx_FreeMem + " " + "(Bytes)" + " " + (Gfx_FreeMem / 1048576) + "Mb",False,False)
		Cursor_YPos = Cursor_Ypos + Cursor_Size
		
End Function