Dave Cortesi, author of "Inside CP/M" and "A Programmer's Notebook", has just published an online version of "Dr. Dobb's Z80 Toolbook", originally printed in 1985. In addition to the original text, Dave has prepared a .zip file with the original files and tools (including RMAC, LINK, LIB and XREF) on disk images ready for use with SIMH. The book is here - http://www.tassos-oak.com/NB2/toolbook.html - along with a link to the code files. Thanks to Dave for his generosity in making these tools available again. best, Jack