INT 2F - MODRES - INSTALLATION CHECK AX = 8221h Return: AX = status 5722h successful other MODRES not installed BX = BCD version number (BH = major, BL = minor) DX:CX -> Output Device structure (read-only) (see #02961) SeeAlso: AX=8220h,AX=8222h,AX=8225h,AX=8227h