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[sindi keesan <keesan AT sdf.lonestar.org>]

Thanks.  I have IRQ 9, 11 and 12 free in linux, and io 140 and 340.

I notice that a lot more things are free in linux than in DOS, where the 
IRQs appear to be taken by both serial ports and the printer port even 
when they are not in use (here only the serial port in use has an 
interrupt assigned to it).  In DOS IRQ9 is taken by IRQ2 cascade and in 
linux it is free.

I tried the isa scsi card with insmod aha154x (?) io=340 irq=12 and 
various other combinations that should have worked and every time was told 
'device or resource busy'.

Today while testing three 3com ethernet cards we learned that if a card is 
not pushed in all the way you can get that same message, also if you try 
to use the wrong module for it.  But one of our cards (once we bent the 
slot cover so we could push it in all the way) let us insmod and ifconfig 
and it still refuses to work.  This card has a second slot (the others 
have one little slot along the edge with the gold fingers, this has two).
It came out of a newish (for us - 600MHz, 1999) computer.

I am pretty sure our scsi card was pushed in all the way, and it was 
listed in several places as taking the module we tried it with.  Maybe it 
is a broken card that is not sending the correct signal back to the driver 
module.  (Similar to cards that don't match the module or are not pushed 
in all the way, it won't send the right confirmation signal).

How do I rmmod an ethernet module?  It also tells me 'device or resource 
busy' when I try.  Can I undo ifconfig eth0 somehow?   lsmod says rtl8139 
ussed by 1 - what is that?


On Mon, 7 Feb 2005, James Miller wrote:

> On Mon, 7 Feb 2005, sindi keesan wrote:
>
> > How do I tell which IRQs and ports are in use by linux?   I read you are
> > supposed to use syslog (how?) or dmesg (which lists the IRQs used by the
> > comports, 3 and 4, and by the IDE controller, 14).
>
> ---------------------
> cat /proc/interrupts
> cat /proc/ioports
> ---------------------
>
> James
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keesan AT sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org