Rosetta Smalltalk was written by Scott K. Warren and Dennis Abbe of
Rosetta, Inc., 5925 Kirby Drive, Houston, Tx 77005. They had a prototype
Z80 version running in 1979, and later, under contract to Intel, worked
on versions for newer microprocessors. I believe Intel paid for the new
versions and never used them.

I have a Beta test version of Rosetta Smalltalk that runs under CP/M or
CDOS on my Cromemco Z80 computer. The window software is configured for
a Zenith-Z19/Heath-H19 terminal. While Rosetta is not a "graphic"
smalltalk, the window system is impressive. Only workspace availability
limits the size and number of windows.  Window "frames" are drawn with
the Z19 graphic characters.  The smalltalk mouse is a secondary cursor
(block style) that is moved around the screen by control keys.

I cannot even begin to think of a reasonable benchmark to run under
Rosetta and (for example) Microsoft Basic. Other than both being
interative and conversational, they are totally different.  Rosetta
Smalltalk echos typed characters promptly, and the window software is
quite acceptable, even on a 9600 baud serial terminal.  Rosetta
Smalltalk for the Exidy Sorcerer is even more impressive.

Rosetta Smalltalk was based on the work at Xerox PARC, but is not an
implementation of Smalltalk-72, Smalltalk-76, or Smalltalk-80.  As far
as I know, Rosetta Smalltalk was never available commercially.  The
software and manual that I have are prototypes.  A lot of stuff on the
market is not as well done.

For more information see:
"Rosetta Smalltalk: A Conversational, Extensible Microcomputer Language",
Scott K. Warren, Dennis Abbe; ACM SigPC Notes, vol. 2, numbers 1/2
(spring/summer 1979).

Or come by my house for a demo :-)

"Texans for Bill the Cat"
James Lee Johnson, U.T. Computation Center, Austin, Texas 78712
ARPA:  jjhnsn@ut-ngp
UUCP:  {allegra,ihnp4,gatech,ut-sally}!ut-ngp!jjhnsn