OS Function Set Functions - Return Access Key                 

Input

Output

AX

5Dh 02h Error Code   AX

BX

        BX

CX

        CX

DX

        DX
     Resets Memory Manager. Access Key returned at next invocation.

     Lets the OS allow other programs or device drivers to use  the OS
     specific functions. This capability  is  provided  only for an OS
     which manages regions of mappable conventional memory  and cannot
     permit programs to use  any  of  the  functions which affect that
     memory, but must be able to use these functions itself.

Note:   This  function is for use by  operating  systems  only.  The
        operating system can disable this function at any time. 


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