In /System/Library/Extensions there is a file AppleRTL8139Ethernet.kext,
which I believe is Apple's drivers for the RealTek 8139 chips.
I've looked at http://www.yqcomputer.com/
for the source code, but am not really sure which file it is in.
Does anyone know which file it is in, or even if it is in Darwin at all?
BTW how do you download Darwin? All i've ever seen is a whole heap
of individual files to download. Is there a single download for the
entire Darwin OS?