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Re: UNDI/PXE driver for GRUB
From: |
Patrick J. LoPresti |
Subject: |
Re: UNDI/PXE driver for GRUB |
Date: |
13 Aug 2002 18:36:44 -0400 |
User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 |
"Yoshinori K. Okuji" <address@hidden> writes:
> IIRC, most PXE ROMs don't support the specification very well. So I
> think it would be much easier to use low-level interfaces rather
> than high-level interfaces.
I am willing to give this a shot. But can you give me a hint how to
hook an interrupt vector from within GRUB? In particular, I am
wondering:
Where is the vector table?
Will my ISR run in real mode or protected?
If my routine handles the interrupt, how do I acknowledge it?
If my routine does not handle the interrupt, how do I forward it
to the old ISR?
I apologize if these are stupid questions, but I have never hacked on
the x86 at such a low level before. And I want to use auxiliary
routines already present in GRUB, if there are any.
- Pat