Function 440Ch /4dh     End Code-Page Prepare                        DOS 3.3+

    Tells a device driver that code-page preparation is complete.

        Entry   AX = 440Ch
                BX = Device handle
                CH = Device category:
                     | 01h   Serial device
                     | 03h   Console (screen)
                     | 05h   Parallel printer
                CL = 4dh

        Return  AX = Error code, if CF is set
                     | ??

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    This function completes code-page preparation started by using
    Start Code-Page Prepare (function 440Ch /4ch).