1978 M6800 Single-Board Computer Experiments featuring the MEK6800 D1/D2 schematics for the Motorola MEK6800 D1 and D2 single-board computers, as well as detailed information on the entire M6800 microprocessor family, this is the perfect how-to guide for anyone with a MEK6800, EXORciser, Heathkit ET-3400, or Altair 680. Apart from a little cover wear, the book is in very good condition. Hardcover. Copyright 1978. This item ships WORLDWIDE.