Programming

For a project that I'm working on I want to write a low level PCI driver, but I can't seem to find any free/cheap documentation on PCI firmware specifications. I came across the "pci firmware specification 3.0" manual but this costs USD $1000 . I am not developing a commercial product therefore I can't afford to shell out this much money. Also, one person told me to read the PCI driver sources (that came with the Linux kernel), but I don't want to rummage through hundreds of lines of code. So could someone provide an easier alternative?

You might find some illuminating stuff in the Documentation folder of the Linux kernel even if you don't find the source code helpful. I'm utterly unable to help with specifics though, having never played with the PCI bus.

I looked in there but its generally Linux specific. I wanted something a bit more generic, because I'm not using Linux for my project. And also I need really low, level access info, as in address space, etc.

---------- Post updated 01-24-11 at 06:14 PM ---------- Previous update was 01-23-11 at 09:35 PM ----------

anyone?

Could you give us an idea of what O/S this PCI driver will run under ? Most O/S are completely different when writing drivers, so it is difficult to know where to point you without this info.

Its not running on any OS, its going to be in assembly. If it sounds crazy that cause its an experiment.

What hardware will this PCI board be plugged into then ? Its very difficult to write a driver if you have no O/S at all...infact nearly impossible

Well its not really a driver, like I said its a firmware which basically interfaces the PCI slots in particular the video card. The pc I plan to experiment with, specs are:
forgive me if the information I'm giving is not what you want, but I really don't know how PCI interface works other than it uses DMA.