There’s some good reading around this subject: a small group within Tektronix took Xerox’ experience in Smalltalk and made a series of 68000 based machines with bitmapped graphics and GUIs. Eventually they put Smalltalk into their scopes, and the group went on to spread the word about advanced software techniques.
Here’s a blog post:
Tektronix Smalltalk Workstations (4400 and 4300 Series)
which introduces us to the Magnolia workstation, Tek’s second effort
and then the Pegasus, which became the 4404, with a 68010 inside.
(both images from the blog and also appearing in the slide deck below)
There are some good resource links at the end of the blog, which lead us to Allen Wirfs-Brock’s
Tektronix Smalltalk Document Archive
with videos and slide decks, including
Smalltalk at Tektronix (pdf)
where you’ll learn about a series of developments, including writing a VM and addressing the severe performance shortfall. And the evangelists’ exit of the team, including Ward Cunningham, Rebecca Wirfs-Brock, and Kent Beck. (And other people I should perhaps have heard of, but haven’t.)