6809 SBC

[Charles H Dickman]

William Blair wrote:
> Having learned assembly language programming on the beautifully simple architecture and instruction set of the 6800, the Byte magazine article linked to below that I read when it was originally published really impressed me.  In the 6809 they made one of the earliest efforts I know of to really tweak an already great uP instruction set based upon an analysis of existing software:
>
> http://tlindner.macmess.org/?page_id=119
>   
I was introduced to the 6809 when I was at university and it just seemed 
right. I came home and bought a CoCo2 and an EDTASM+ cartridge just to 
play with it. I still have it.

Is there a source for 6829 MMUs? I would love to build a 6809 SBC with 
an MMU that could run OS-9.

-chuck