On Tue, 21 Jan 2020 at 16:49, Nigel Williams <nw@retrocomputingtasmania.com> wrote:
On Wed, Jan 22, 2020 at 5:22 AM Larry McVoy <lm@mcvoy.com> wrote:
> Yeah, it ran on the 16 bit one but I looked and couldn't find if they
> got Unix on the z80000 (which I suspect is what Jon meant).

I spent some time attempting to confirm whether the Z80000 (the 32-bit
flat address space development of the Z8000) ever went to silicon and
was not able to confirm it did. My suspicion remains that the Z80000
was only ever a paper specification and did not even get to a first
spin. If anyone knows and has some evidence I would be glad to update
the wikipedia page.

This thread reminded me that I own a copy of the Zilog "1983/84 Components Data Book," which I am talking to Al Kossow about scanning.  It fully details the Z80,000 on paper but does not say anything about hardware, everything is labeled preliminary.  It is dated September 1983.