X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 21 - dos 2.25 only - get lead byte table (2-byte character support)

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INT 21 - DOS 2.25 only - GET LEAD BYTE TABLE (2-BYTE CHARACTER SUPPORT)
        AH = 63h
        AL = subfunction
             00h get system lead byte table
                Return: DS:SI -> lead byte table
             01h set/clear interim console flag (determine whether interim
                        bytes are returned on some console functions)
                DL = 01h/00h to set/clear interim console flag
             02h get interim console flag
                Return: DL = interim console flag
Return: CF set on error
            AX = error code (01h) (see AH=59h)
        CF clear if successful
Note:   does not preserve any registers other than SS:SP

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