Starting in 1987, future Mac product circuitry and VLSI designs were run on
a Cray X-MP/48 for hardware and software simulations under Unicos Cray?s
licensed version of Unix System V: Apple was the first company that Cray
allowed to access their Network Systems Corporation (Minneapolis) developed
high-speed channel, operating at 850Mbits per second, which Cray called its
HSX channel.
https://www.cbronline.com/news/apple_uses_cray_x_mp_and_unix_to_design_your…
On Sun, Jun 14, 2020 at 8:16 PM Ethan O'Toole via cctalk <
cctalk at classiccmp.org> wrote:
He didn't
know of anyone doing much other with it either. I think it
was
bought before there was a unix type OS under the
Macos.
thanks
Jim
https://wiki.c2.com/?AppleCrayComputer
They bought it to use to design the next Macintosh CPU I thought (break
away from the 68000 but never did), but that page talks about electronics
layout.
- Ethan