Things you knew but forgot

COM PORT SETTINGS

COM1        03F8                    IRQ4

COM2        02F8                    IRQ3

COM3        03E8                    IRQ4

COM4        02E8                    IRQ3

COMMON IRQ USES

IRQ        Computer

0            System Timer

1            Keyboard

2            Cascade to 2^nd programmable interrupt controller / Video Adapter (9)

3            COM2/COM4 or Bus Mouse

4            COM1/COM3

5            LPT2; Sound Card

6            Floppy Controller

7            LPT1

8            Real Time Clock

9            Open / Redirected IRQ2

10          Open

11          Open

12          PS/2 Mouse

13          Math Coprocessor

14          Fixed Disk (Primary IDE Controller)

15          Open / Secondary IDE Controller