I thought rundll32 was a Windows bridge for running DLLs as separate processes. Sometimes it's used as a means to execute drivers, I *think*. So the question is, what was the DLL that it was loading, and what was *that* doing with the serial port? Mauricio Giovagnini wrote: > Weird! > > I wonder what was runll32.exe doing with the serial port.... > > > > ----- Mensaje original ---- > De: John Pfaff > Para: Microcontroller discussion list - Public. > Enviado: viernes 19 de enero de 2007, 1:20:00 > Asunto: Re: [EE] PC Serial Port - The Answer > > NTFiles did the trick. rundll32.exe was the culprit. I stopped the > process, installed the driver (the serial was now unused), and now the > tablet works just fine. I can even reboot the computer and when it > comes back up the tablet still works. > > Thanks everybody for your suggestions! I knew this was the right place > to ask. Too bad I didn't think of it a month ago :( > > John Pfaff wrote: >> I'm using the tablet on another PC, one that doesn't have this serial >> port problem. >> >> Paul Hutchinson wrote: >> >>> Before you spend too much time trying to get the serial port working, have a >>> look at the release notes for your particular Wacom tablets XP driver. >>> >>> A couple months ago I went through the hassle of getting a serial port >>> installed on a new PC for an old Wacom tablet. Then I discovered that my old >>> serial Wacom tablet is not supported under Win XP SP2, it was in the release >>> notes, that I hadn't read, doh. Had to swap it with the USB tablet on my >>> Win2K PC (the Win2K Wacom driver did work with my serial tablet). >>> >>> Paul >>> >>> >>> >>>> -----Original Message----- >>>> From: piclist-bounces@mit.edu >>>> [mailto:piclist-bounces@mit.edu] On Behalf Of John Pfaff >>>> Sent: Thursday, January 18, 2007 1:14 PM >>>> To: Microcontroller discussion list - Public. >>>> Subject: Re: [EE] PC Serial Port >>>> >>>> I haven't installed the Wacom driver (not for lack of trying), or >>>> connected the tablet. The setup program won't install the driver >>>> because the serial port is in use. My problem is determining >>>> what has >>>> the serial port locked up and freeing it. >>>> >>>> >>> >>> >> > -- Timothy J. Weber http://timothyweber.org -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist