Sounds reasonable. = Perhaps it will be wise that the OP tries to open the serial ports without = attaching the Tablet to it in order to probe this, otherwise if its windows= the one that its using the tablet NtFiles won't show any useful informatio= n because it will indicate that the OS is using it... and when the OS is us= ing it it can be a virus or trojan hijack too... ----- Mensaje original ---- De: Alan B. Pearce Para: Microcontroller discussion list - Public. Enviado: jueves 18 de enero de 2007, 14:39:27 Asunto: Re: [EE] PC Serial Port >I haven't been able to install the tablet driver, >because it tells me that COM1 is not available. Do you have the tablet connected? If so it sounds like XP thinks it is a = mouse, as it has probably sent a data string to the port when powered up, = which XP detects and figures a mouse is present. Because it is a tablet it may also be deliberately trying to look like = aerial mouse, so it works without the driver. = -- = 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