[ECOS] i386 / pc virtual vectors (RedBoot)

Gary Thomas gthomas@redhat.com
Fri Jan 5 07:40:00 GMT 2001


Be sure and look at the patches from Fabrice.  I'm pretty sure he's
already tackled many of these "mountains."

On 05-Jan-2001 Jesper Skov wrote:
> Hi
> 
> I think I'll try to find some time next week to add virtual vectors to
> the i386/PC target - after that is in place, getting RedBoot up and
> running should be simple.
> 
> However, since I never played with PCs when assembly was The Thing to
> use, I basically have no clue of how it all fits together.
> 
> So I was hoping I might find some help here. For starters just where
> to put the VSR table and virtual vector table, since these need to be
> at an absolutely (and static regardless of startup type) addressed
> location. 
> 
> I see that the lower 4kB are untouched in the memory map - can the VSR
> table (0x100 bytes) and virtual vector table (0x100) fit in there, or
> is it all used up by magic Intel vector tables and CPU bug fixes? :)
> 
> I'll also need some help with testing when I'm done, but more about
> that when I get there.
> 
> Thanks,
> Jesper


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