Prepare EMS Hardware for Warm Boot                      

Input

Output

AX

5Ch   Error Code   AX

BX

        BX

CX

        CX

DX

        DX
     Prepares the EMM hardware for a warm boot.

     Notes:

     *  This function  assumes  that  the  next  operation  that the
        operating system performs is a warm boot of the system.

     *  In general, this function will  affect  the  current mapping
        context, the alternate register  set  in  use, and any other
        expanded memory  hardware  dependencies  which  need  to  be
        initialized at boot time.

     *  If  an application decides to map  memory  below  640K,  the
        application must trap all possible conditions  leading  to a
        warm boot and invoke  this  function  before  performing the
        warm boot itself.


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