Delphi 读取CPU Id

在网上找了很久，终于找了一段能读出正确CPU ID 的代码，以下代码经过Delphi7测试

procedure TForm1.Button1Click(Sender: TObject);
var
   _eax, _ebx, _ecx, _edx: Longword;
   s, s1, s2,result: string;
begin
  asm
     push eax
     push ebx
     push ecx
     push edx
     mov eax,
     db $0F,$A2
     mov _eax,eax
     mov _ebx,ebx
     mov _ecx,ecx
     mov _edx,edx
     pop edx
     pop ecx
     pop ebx
     pop eax
  end;
   s := IntToHex(_eax, );
   s1 := IntToHex(_edx, );
   s2 := IntToHex(_ecx, );
   result:=s+s1+s2;
   edit1.Text:=result;
end;