Re: New Pile of Mystery Boards

[obsbedia2@aol.com (Obsbedia2)]

2.  Mastery Development, Designed by James K. Kenney, Firmware by J.
Scott Harris.  Copyright date of 1988.  Blue baseboard.  One 20-prong
connection near right side on upper edge.  Largest chip has a sticker
which says "Teacher, Rev. 5.0".  From a IIgs.

Mastery Development is the old name for Mastery Something-or -Other out of
Washington state.  They produce excellent Apple II software and have a
networking system that runs it, MECC software, and a telecommunication network.
 This could be one of their cards that goes into a IIgs or IIe.
Jay Edwards