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Re: HURD to L4 todo

From: Ed Page
Subject: Re: HURD to L4 todo
Date: Mon, 8 Oct 2001 13:39:22 -0700 (PDT)

> If you want to help right away, and get a feeling about low-level
> kernel hacking, you may want to have a try at a device driver for L4/x86!
> You'll have to learn how to access a device (e.g. memory mapped or using
> the I/O address space and reading/writing latch registers) in general
> [e.g. by studying an existing device driver on either Linux or BSD]
> and then try to port (or rewrite) that driver to L4 [e.g. after you've
> learned how L4 passes IRQ-notifications to you and how you can access
> the memory/io-space via L4]. Interested?

Yeah.  I need to go look at device drivers.  Since I had some spare time 
today,I've been mapping
out the call paths to see how the fpu emulation is called and I have been 
looking at what might I
ned to do to put it in Fiasco.  I am also going to see how mach does it for its 
broken fpu

I ahve been at times studying the Mach, Fiasco, Linux, and GeekOS kernels to 
try and learn things.
 I quickly learned that looking ath te big picture is slow so thats why O have 
been looking at the
FPU emulator.  I think it has helped some seeing how the entry's and the traps 
and all work.

Thanks for the ti[ps.  I'll have to go look at OsKit.  I can't wait till I know 
enough to be of
use to thios project
Ed Page

"You probably wouldn't worry about what people think of you if you could know 
how seldom they do."
 -- Olin Miller

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