debian-installer netboot

[Benoit Peccatte <benoit.peccatte@enst-bretagne.fr>]

Hello, 

I'm tring to compile debian-installer to be able to boot via the
network. The goal is to try it on an alpha, by my first steps are on an
i386 as it is much faster.

I made the "build_netboot" target, I think the word netboot is
misleading, because I got a mini.iso file : "tiny CD image that boots
the netboot installer". But what I want is a net-BOOT not a net-install.

How can I get a tftpboot file to really netboot ?
How can I get same file for an alpha ?

Thank you,
Benoit