When you mention, Osborne computer books, and 1980s I think of these (different ) books Osborne Introduction to microcomputers, Volume 0 https://archive.org/

When you mention, Osborne computer books, and 1980s I think of these (different ) books Osborne Introduction to microcomputers, Volume 0 https://archive.org/details/an-introduction-to-microcomputers-volume-0-the-beginners-book-2nd-edition/page/n9/mode/1up https://archive.org/details/an-introduction-to-microcomputer... Osborne Introduction to microcomputers, Volume 1 https://www.rsp-italy.it/IT/Books/_contents/Osborne-An%20Introduction%20To%20Microcomputers%20Volume1.pdf https://www.rsp-italy.it/IT/Books/_contents/Osborne-An%20Int... There is volume 2 in the series 2, too I have originals of these books and his books on 6800 6502, 6809 and 68000 programming.