It's z because the Atmel AVR is the last thing you'd want to use. (As
usual, once you've got C going, it's ok, except for the design bugs.)
They were in the Berkeley mote, which we worked on years ago, later on
custom hardware, but always with completely different software from
Berkeley's.
I had little processes. The loader minimised register saves on interrupts.

I had a chart somewhere with the available non-unicode letters.

On Mon, 29 Oct 2018 at 14:07, Richard Miller <9fans@hamnavoe.com> wrote:

>
> I think I have sources for the z[acl] suite somewhere. You make it
>> sound like maybe I should give them back to Charles
>>
>
> What architecture is that for?  I picked 'z' for riscv hoping there wasn't
> a collision, but I can change it.
>
>