The SYM-2 was an evolution of the SYM-1.
From the press release:
Synertek has introduced the SYM-2, which offers a choice of microprocessor (6502, 6809 or 6802). The SYM-2 is software compatible with the SYM-1 and adds some hardware features: on-board power supply , eight toggle switches for input, eight LEDs to display outout in binary and cassette interface jacks. Hardware compatibility between the two SYMs ensure that RAM and disk interface devices that work with one will work with the other. Designed for learning computer hardware fundamentals, the SYM-2 sells for $249 from Synertek Inc.
See also:
MTU CODOS
CODOS (Channel Oriented Disk Operating System) is the name of the Disk Operating System made by MTU for KIM-1, SYM-1 a...
Me and my KIM-1
My first computer is a KIM-1. Still have it! A life changing experience!
This is the story of me and the KIM-1.
...
Galactic Expansion Board
When I got a SYM-1 again, I needed to add ROMs, RAM and it would be nice to have the 1541 DOS finally operational (I had...
C, Basic, RAE on the SYM-1
Wayne Parham of Parhamdata has an interesting page on his VIM-1 and SYM-1 systems.
He has written some interesting pa...