John Pfaff wrote:
> I have a modem installed, but it's internal and uses COM3.
> I haven't been able to install the tablet driver, because it tells me 
> that COM1 is not available.
> Other programs (Hypter Terminal, Tera Term) tell me COM1 and COM3 are 
> available (the only two ports on the system), but can't use either one 
> because the "telephony device is in use".
> What I'm really looking for is a way to tell what process has the serial 
> port locked.
>
>   
COM1 and COM3 share the safe interrupt port. So when COM3 is used, COM1 
is used as well.

--Bob


> Dario Greggio wrote:
>   
>> John Pfaff wrote:
>>
>>   
>>     
>>> I'm using Windows XP, and can't use one of the serial ports.  
>>>     
>>>       
>> Hi John, if you're using a Drawing Tablet, then it probably should have 
>> its own driver, which "captures" the serial port and won't let you use 
>> it from another program.
>> To see traffic flowing through COM port, you should unload/disable the 
>> driver. Actually, I'm not sure you'd see anything... at times the 
>> protocol is kind of hidden and parameters may not be clear.
>>
>> If you need to test the Port because you feel it's broken, then 
>> definitely uninstall Tablet Driver, and use Hyperterminal to do some tests.
>>
>>
>>   
>>     
>
>   

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