Assign interrupt 0 to Timer or to nothing on uClinux?

I'm seeing some interrupt behavior I don't understand. According to

http://www.alterawiki.com/wiki/uclinux (http://www.alterawiki.com/wiki/uclinux)

--- Quote Start ---

Note in Linux, irq 0 means auto-detected, so you must not use irq 0 for ANY devices, except for timer.

--- Quote End ---

Does that mean my system timer should be on Interrupt 0 or that it should be on no device?

I had a system that was booting and running the kernel but networking was not working. I noticed I had one of my scatter gather DMA's on interrupt 0. So I rebuilt the system to not have anything on interrupt 0 and now it does not boot the kernel at all.

Anybody explain the interrupts to me?