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.

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