INT 49 - MAGic v1.16+ - GET POSITION OF MAGNIFIED WINDOW
        AX = 0005h
Return: AX = status
            0000h successful
                BX = vertical position (char row or pixel row)
                DX = horizontal position (char column or 8-pixel units)
            FFFFh MAGic busy, retry later
                BX,DX destroyed
        CX destroyed
SeeAlso: AX=0003h,AX=0004h,AX=0006h,AX=0007h