[TUHS] My EuroBSDcon talk (preview for commentary)

Branden Robinson g.branden.robinson at gmail.com
Fri Sep 13 19:03:01 AEST 2019

Hi Warner,

Just a few minor corrections.

1. slide 21: s/Murrey Hill/Murray Hill/
2. slide 18: s/IOCC/&C/
3. slide 28: s/strippe down/stripped down/; s/IOCC/&C/

Now I know why the domain name is ioccc.org and not iocc.org.  Well-crafted
obfuscated C is nothing if not...unorthodox.

I hadn't even heard of VENIX before--great archeology!  As you lusted for
that OS back in the '80s, I lusted after the Rainbow 100 itself, and found
it cool for the same reasons you did.  The flexibility of the system was
appealing, keeping a bridge to my Z80 origins and the x86 juggernaut.  As
it happened I wound up with a 6809 machine running OS/9, and got Unix-like
exposure without even knowing it (the text editor, T/S Edit, was a vi
clone, and the "word processor", T/S Word, a *roff clone).  And best of
all, that machine taught me how to store multibyte integers correctly.

x86's worst-ever implementation of memory segmentation put me off of
assembly programming for years.  When I finally saw sensible segmentation
combined with hardware memory protection, the universe made sense again.

You have a wealth of great material here and I think you will surprise some


On Fri, Sep 13, 2019 at 1:21 PM Warner Losh <imp at bsdimp.com> wrote:

> OK. I've shared my slides for the talk.
> Some of the family trees are simplified (V7 doesn't have room for all its
> ports, for example)
> Some of it is a little cheeseball since I'm also trying to be witty and
> entertaining (we'll see how that goes).
> Please don't share them around until after my talk on the September 20th
> I'd like feedback on the bits I got wrong. Or left out. Or if you're in
> this and don't want to be, etc.
> All the slides after the Questions slide won't be presented and will
> likely be deleted.
> https://docs.google.com/presentation/d/177KxOif5oHARyIdZHDq-OO67_GVtMkzIAlDX-cHxgb4/edit?usp=sharing
> Please be kind (but if it sucks, please do tell). I've turned on
> commenting on the slides. Probably best if you comment there.
> I have a video of me giving this talk, but it's too rough to share...
> Thanks for any help you can give me.
> Warner
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