获取mac.txt

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implementation
  uses nb30;
{$R *.dfm}
function GetNetBIOSAddress : string;
var   ncb   : TNCB;
   status   : TAdapterStatus;
   lanenum : TLanaEnum;
     procedure ResetAdapter (num : char);
     begin
       fillchar(ncb,sizeof(ncb),0);
       ncb.ncb_command:=char(NCBRESET);
       ncb.ncb_lana_num:=num;
       Netbios(@ncb);
     end;
var
   i:integer;
   lanNum   : char;
   address : record
              part1 : Longint;
              part2 : Word;
             end absolute status;
begin
   Result:='';
   fillchar(ncb,sizeof(ncb),0);
     ncb.ncb_command:=char(NCBENUM);
     ncb.ncb_buffer:=@lanenum;
     ncb.ncb_length:=sizeof(lanenum);
   Netbios(@ncb);
   if lanenum.length=#0 then exit;
   lanNum:=lanenum.lana[0];
   ResetAdapter(lanNum);
   fillchar(ncb,sizeof(ncb),0);
     ncb.ncb_command:=char(NCBASTAT);
     ncb.ncb_lana_num:=lanNum;
     ncb.ncb_callname[0]:='*';
     ncb.ncb_buffer:=@status;
     ncb.ncb_length:=sizeof(status);
   Netbios(@ncb);
   ResetAdapter(lanNum);
   for i:=0 to 5 do
   begin
     result:=result+inttoHex(integer(Status.adapter_address[i]),2);
     if (i<5) then
     result:=result+'-';
   end;
end;