Assembly Language Help (alang.hlp) (Table of Contents; Topic list)
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LMSW/SMSW Instructions
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  Title:    Load or Store Machine Status Word     Flags: O D I T S Z A P C
            80286-80486 Only                             ═════════════════
                                                              -none-
  Syntax:   LMSW src
            SMSW dest
 
  See also: .286P
 
  Description:
 
     LMSW loads a value from a memory operand into the Machine Status
     Word (MSW). SMSW stores the MSW into a specified memory operand.
 
     LMSW is available only in privileged mode. See Intel documentation
     for details on MSW and other protected-mode concepts.
                                    -♦-