Re: [TCLUG:18250] multiple ethernet boards

[^chewie <chewie@wookimus.net>]

On Wed, May 31, 2000 at 10:13:19AM -0500, David S. Cargo wrote:
> My firewall setup is anticipated to have two 3c509 cards (which I
> have).  I looked at the multicard.html file, but it doesn't answer
> some fundamental questions.
> 
> Can the ethernet cards share an IRQ (or do they need to be unique)?
> (And where to I look to find out which ones are available?)

No.  Don't bother trying.  Bad idea...  To assign irq's and I/O's to
multiple cards:

	1.  Support is compiled monolithically into the kernel, then
		use BootPrompt-HOWTO.html.gz to figure out how to
		assign values.  Typical values include: irq's
		3,5,7,10,11 and io's 0x240, 0x260, 0x280, 0x300,
		0x320, 0x340

	2. Support is compiled modularily.  Assign values as aliases
		for modutils.  In Debian, edit /etc/modutils/aliases
		file or manual module loading in /etc/modules.conf

Read the following: Net-3(4)-HOWTO, BootPrompt-HOWTO, Kernel-HOWTO.

> What are the possible choices for the IO address?  (And where to I
> look to find out which ones are available?)

If trial and error doesn't work, then read the driver sourcecode.
You'll see it. (I've used this technique myself.)

-- 
  Chad "^chewie, gunnarr" Walstrom <chewie@wookimus.net>
              http://wookimus.net/chewie

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