Quote Originally Posted by RebelsHaven View Post
In x86 assembly, there is no directive that I know of to select a different core. I'm afraid it might have to be performed with a call to a seperate module. I really don't know...
Last time I wrote assemble code was more than twenty years ago on an atari st, so i'm not up to date here. I'll swap disc again and try to find out how it is done in the linux kernel.
Quote Originally Posted by RebelsHaven View Post
To do the mod I did, I wrote a substitute PCI LAN Boot ROM and replaced the original. The new ROM writes to the MSR when it's executed and that is when the LAN Boot is enabled during POST....
That sounds like a pretty save way to mod the bios. Is this A64 Rom Patcher public available? Googled for it but the only related result was your post here.