Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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    This function is supported on fixed disks only.
 
    The upper 2 bits of the 10-bit cylinder number are placed in
    the upper 2 bits of register CL.
                                    -♦-