Re: UNDI support

[Patrick J. LoPresti]

"Aaron McSorley" <address@hidden> writes:

> Dont know if it helps but, you may want to look at pxelinux for some
> ideas.  Whatever they're doing seems to work very well with the dos
> UNDI driver.
> 
> http://syslinux.zytor.com/pxe.php

The problem is less in the ideas and more in the implementation.

PXELINUX is great, but it runs entirely in real mode.  So it is not a
very good source of ideas for GRUB.

I tried to get this working once (see
http://mail.gnu.org/archive/html/bug-grub/2002-08/msg00025.html), but
eventually I gave up and switched to PXELINUX.  It works well enough
for my purposes (http://unattended.sourceforge.net/).

The problem I had was invoking the real-mode PXE stack from GRUB and
having it work right.  Maybe I just lack sufficiently deep
understanding of the x86 architecture, especially real/protected mode
and how they interact with interrupts...

If Etherboot has a driver which takes care of this automatically, that
would be cool.  I was not aware of any such driver when I was hacking
on pxegrub.

 - Pat