OpenEuphoria

Re: How big is Euphoria clan

• Posted by Irv Mullins <irvm at ellijay.com> Mar 22, 2001
• 510 views

On Thu, 22 Mar 2001, leviathan at uswest.net wrote:

> > >...and the ELF (a machine that ran 
> > > solely on ASM... 
> > 
> > But, hey, you could draw a schematic for the whole computer 
> > on the back of a napkin. 
> 
> Honestly? It looked a helluvalot more complex than a back of a 
> napkin. Maybe thats one huge napkin?

Not really. It was printed in Electronic Design around 1976. The schematic
takes up the top third of the  page  (about 3 1/2 x 7") - anybody want a copy :)

> The ELF was probably as fast as my dads' 2Mhz 6809 :) But I don't 
> know this, I was never able to program it...

Well, the clock ran at 1 mhz, but each instruction required at least two cycles
(fetch, and exec). For anything practical, like addressing more than 
256 bytes of memory, more cycles were required, since the data bus 
was only 8 bits wide. The practical result was a rate of maybe 125,000 
per second.  The 6809 would run rings around it. 
However, the 1802 processor used in the ELF is radiation hardened,
so there are a couple, still working, AFAIK, in the Voyager spacecraft, 
about a zillion miles from earth by now.  

-- 
Regards,
Irv