rarest computers. was: RE: Xerox Alto Restoration + Emulation

[SHAUN RIPLEY]

--- "Dwight K. Elvey" <dwight.elvey at amd.com> wrote:

> >From: "Vintage Computer Festival" <vcf at siconic.com>
> >
> >They have a *very* well done restoration page. 
> Cool project!  However, I
> >don't believe their claim to have the only original
> Alto left in existence
> >is accurate.
> 
> Hi
>  I was just wondering. What people on this list
> consider their
> rarest computers in their collections. Here is my
> list
Mine is a vax 3900 (very common to you guys).
Also I have a Modicon P230 Programmer (XT compatible
portable computer with EGA amble mono monitor), but
somebody 'upgraded' it to a 486. I will have a NEC v25
emulator (looks like a portable computer) if I buy it
from a warehouse.

vax, 3900

> 
> 1. Nicolet 80    ( 20 bit mini with core. working
> condition. Only know
>                   of 2 others. I doubt there are
> more than 10 left
>                   anywhere. )
> 2. SIM-4 4004 development system  ( most likely
> fewer than 30 left. Running.
>                    I only know of 2 others. )
> 3. Olivetti M-20  ( Few in the US but maybe a couple
> hundred in Europe.
>                       Z8000 processor. Runs )
> 4. Jupiter Ace  ( Several hundred most likely exist
> but unusual in that
>                    it had Forth in ROM. Runs )
> 5. NC4000 Delta Board  ( Most likely only 100 around
> but most have no
>                  idea as to the collectable nature.
> These might be
>                  found in embedded system. These are
> unique in that they
>                  have the Forth processor on them
> that was designed by
>                  NOVIX and Chuck Moore. A 4 Mhz
> processor could run rings
>                  around a 33MHz 80386 of its time.
> Things like sorting
>                  1000 integers in 19.2ms )
> Dwight
> 
> 
> 


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