For I/O??????

marzmega

IRQ Default Function I/O Address
0 System Timer 40h
1 Keyboard 60h
2 Cascade -
3 Default COM2 (external modem), COM4 2F8h, 2E8h
4 Default COM1, COM3 3F8h, 3E8h
5 LPT2 / Sound card * 278h
6 Floppy drive 3F0h
7 LPT1 378h
8 Real time-clock 70h
9 Cascade / USB -
10 Open for use -
11 Open for use -
12 PS/2 mouse * -
13 Math coprocessor F0h
14 Primary hard drive controller 1F0h
15 Secondary hard drive controller 170h

Is that all the I/O i need to know?

lazyart

That's them!

Webmaster

www.techexams.net/coexam/start.php?exam=apluscore2

You can take this quiz to memorize them...

longshot

I think this is gonna be a hard part for me. The numbers seem to run together. I will just keep memorizing and doing the self test.

lazyart

i memorized the IRQs independently of the i/o addresses. I found it easier that way.

longshot

I made up a little handy laminated pocket sheet based on marzmegas post....Its helping me. I figured out a little system for the numbers that works for me. I am nailing 100 on the practice test. I will keep looking at it though so I ingrain it into my thick skull .