6829 was 6809 SBC

[Phill Harvey-Smith]

N0body H0me wrote:
> From what little I've managed to gather, the 6829 had some limitations that made it either difficult to use, or otherwise impractical for 
> many (if not most) applications.  I've read someplace, for instance, that you were restricted to four tasks.  I suspect for that reason,
> they're rarely seen.  They were rare even in their own time.
> 
> A better approach, may be to create some hardware to emulate either
> a Gimix or SwTPc style DAT (dynamic address translator).  The key
> element here, is that both of these are supported by some version
> of OS/9.

The Dragon Beta/128 prototype also has a DAT implemented with a couple 
of small SRAMS and a bunch of LS/PAL logic, used the output of one of 
it's PIAs as a task select, and supported 16 tasks, and again was 
supported by OS-9.

For those who don't know the Dragon Beta/128 was a prototype machine 
that Dragon data where working on when they went bust, it was pretty 
impressive specs for a machine of it's sort, dual 68B09s, up to 768K of 
RAM etc. Details and pics here : http://www.dragondata.co.uk/

Cheers,

Phill.

-- 
Phill Harvey-Smith, Programmer, Hardware hacker, and general eccentric !

"You can twist perceptions, but reality won't budge" -- Rush.