[wellylug] Werid Network Problems + IRQ Conflict

[Klenner, Colin]

True enough but if the BIOS is set to PnP then any and all of these may
change depending on allocation requirements. 
If possible set the basic IRQ's  2-7 to be Legacy ISA devices in the BIOS so
they do not get randomly allocated with base addresses. This overcomes most
problems. Leave anything else as PnP is usually ok.

Colin

-----Original Message-----
From: Jonathan Harker [mailto:jharker at massey.ac.nz] 
Sent: Monday, August 11, 2003 12:08 PM
To: wellylug at lists.naos.co.nz
Subject: Re: [wellylug] Werid Network Problems + IRQ Conflict


Klenner, Colin wrote:

> You should go to the BIOS of your machine.
>  
> Bus mice use IRQ-2 cascaded to IRQ-9 if required.
> ISA network cards are normally set to default to IRQ-3 or IRQ-4, which
> are also the IRQ's for serial ports. A serial mouse may interfere with 
> the ISA NIC if they are using the sale IRQ's regardless of the interupts 
> they use. For instance if the mouse if on COM1 and the NIC on COM3 they 
> both use IRQ-4 and can interfere with each other.

On most systems, the following are fixed in concrete and can't be shifted. 
Usually, your available IRQ numbers are 5, 7, 9, 10, 11 and 12. If you don't

have a floppy controller, you can use 6 as well, and you have a PS2 mouse 
which will (always) be using 12. If you are using your parallel port that
will 
most likely be using 7.

0  Timer
1  Keyboard
3  Serial port COM2/COM4
4  Serial Port COM1/COM4
5
6  Floppy controller
7
8  Clock
9
10
11
12
13 Floating point
14 ide0
15 ide1

Generally, ethernet cards sit on 9 10 or 11.

Here's my set up (I use a USB mouse)

0  Timer
1  Keyboard
3  Serial port COM2/COM4
4  Serial Port COM1/COM4
5  USB
6  Floppy controller
7  AC97 audio controller
8  Clock
9  ACPI
10 MIDI Device
11 Ethernet adapter
12 RAGE 128 Graphics
13 Floating point
14 ide0
15 ide1

Hope that helps,
Jonathan



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