That's it. Interrupt sharing is not a problem on new OSes since a long tim= e! = Windows 2000/XP an Linux starting from kernel 2.2 (as I remember) ----- Mensaje original ---- De: Herbert Graf Para: Microcontroller discussion list - Public. Enviado: jueves 18 de enero de 2007, 17:31:45 Asunto: Re: [EE] PC Serial Port On Thu, 2007-01-18 at 12:40 -0700, Bob Axtell wrote: > 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 seria= l = > > port locked. > > > > = > COM1 and COM3 share the safe interrupt port. So when COM3 is used, COM1 = > is used as well. Before the days of PCI and interrupt sharing that was true. However, assuming the com ports are PCI devices (whether physically in a PCI slot, or simply virtually hanging off the PCI bus in the form of being built in to the south bridge), Windows should have zero problems with them sharing the same IRQ. TTYL -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist = = = __________________________________________________ = Pregunt=E1. Respond=E9. Descubr=ED. = Todo lo que quer=EDas saber, y lo que ni imaginabas, = est=E1 en Yahoo! Respuestas (Beta). = =A1Probalo ya! = http://www.yahoo.com.ar/respuestas = -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist