Hi All PICers ! > From: Ken Dougal > Subject: Help on comms and IRQ's please > My mouse is on comm 1, IRQ4 > My modem is on Comm 2, IRQ3 > > So can I connect something to Comm 3 or 4 if they use the > same IRQs as Comm 1 & 2 ????? To COM4, of course. Yes,your modem at com2 and your device at com4 shared the same IRQ3, but (I sure :) not at the SAME time. Against this, your mouse work all time so you don't use com3 because IRQ4 is busy. Best Wishes, Alex Torres. Kharkov, Ukraine, exUSSR. E-Mail To : altor@cook.kharkov.ua via InterNet or 2:461/28 via FidoNet P.S. I also have mouse at com1, ext.moem at com2 and varios devices, I connect to com4. --- GoldED 2.50.A0531+