I think he's talking about Zilog's 16 bit processor, which was completely incompatible with everything and is more or less forgotten now. (Literally in my case, I can't even recall its name).
Yes, I was talking about Z8000. Amazing processors (Z8001 and Z8002), but Zilog took too long to clean the bugs. That, and the lack of retrocompatibilty sealed its fate and Motorola 68k took over.
Zilog tried again and again (Z80000, Z180 with Hitachi, Z280, Z380...) but never recovered.
I have two Z380 waiting for the completion of its motherboards... :-)
Yes, of course, that's the one. In the embedded shop I worked it I'm sure we looked at it briefly - it was overkill for our applications and also didn't have the natural advantage of being in any way compatible with the desktop computers we used for embedded software development.