I got it for someone but he already has a copy. It's "How to Use the Nova Compueters". It covers the Nova, Nova 800, Nova 1200, and Supernova. It explains the insruction set, I/O in general, details of specific I/O devices, interfacing and timing (with some schematics), and installation. It's 8 1/2" by 11", softbound, rather worn (pen marks inside, tape on binding, coffee-cup ring on cover), but the paper and printing are in good shape. Trades in kind (documentation, source code, book, magazine, etc.) or of 8-bit micro software happily accepted. I'm going on vacation at the end of the week so if you don't reply soon, expect a delay. -- Derek