[Coco] 16/32 bit 6809 derivative

[Gene Heskett]

On Friday 22 September 2017 23:54:02 Joel Rees wrote:

> A number of people are designing MMUs for their softcore Cocos.
>
> I'm wondering if I'm the only one who thinks about designing a CPU
> that implements the 6809 instruction set in 16-bit accumulators and
> 32-bit index registers, with a 16-bit instruction set accessed by
> pre-bytes.

If going to that much trouble Joel, how about giving it the 6309 
instruction set? In modern 3.3 volt 1500 mhz silicon, it ought to be 
able to out coco3 a coco3.  I'd love to see something like that running 
on a 4GB, 4 core rockchip running at 1.5 GHz on a rock64 card. I just 
got 2 of them, and am about to see if I can replace the r-pi-3b running 
my biggest lathe, an 11x36 Sheldon thats about 70 years old. I've not 
yet booted one, just got them yesterday but oral surgery interfered.

I only need one to run the lathe.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>