OSDev.org

I wanted to know: If each chip, like the Northbridge and Southbridge, has its own routing table, when the BIOS assigns addresses to I/O devices (like the keyboard, mouse, or hard drive), does it store these addresses in every chip (like both the Northbridge and Southbridge chips on the motherboard)? Is that so the Northbridge or Southbridge chip can know how to route the request to the correct device?

I see you already asked this question elsewhere and got some pretty good answers.

But the answer as far as an OS developer is concerned is "it doesn't matter". The firmware figures it out for you, so you don't need to worry about it.