Here's our Windows XP Tip for.. February 1, 2006
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Pardon the Interruption
An interrupt conflict can be a true pain. To help you avoid such conflicts as much as possible (and solve them when you can't) here's a list of interrupt assignments.

0 Timer 1 Keyboard 2 Cascade (for interrupts above 8) 3 COM2, COM4 4 COM1, COM3 5 LPT2 6 Floppy Controller 7 LPT1 8 Clock 9 Sometimes used for ISA in a PCI computer 12 PS2 Mouse Port 13 Math Coprocessor 14 IDE Controller