X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 21 - dos 3.1+ internal

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INT 21 - DOS 3.1+ internal - SET EXTENDED ERROR INFORMATION
        AX = 5D0Ah
        DS:DX -> 11-word DOS parameter list (see AX=5D00h)
Return: nothing.  next call to AH=59h will return values from fields AX,BX,CX,
          DX,DI, and ES in corresponding registers
SeeAlso: AH=59h

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