Assembly Language Help (alang.hlp) (Table of Contents; Topic list)
SGDT Instructions
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  Title:    Store Descriptor Table                Flags: O D I T S Z A P C
            80286-80486 Only                             ═════════════════
                                                              -none-
  Syntax:   SGDT table
            SIDT table
            SLDT table
 
  See also: .286P, LGDT
 
  Description:
 
     Stores a descriptor table register into a specified operand. SGDT
     stores the Global Descriptor Table; SIDT, the Interrupt Descriptor
     Table; and SLDT, the Local Descriptor Table. These instructions
     are available only in protected mode.
 
     See Intel documentation for details on descriptor tables and other
     protected-mode concepts.
                                    -♦-