A source for HZ100 CP/M 85 would be:
Dr. S100 (Herbert Johnson)
CN 5256 #105
You can contact Dr. S100 via internet address: hjohnson@pluto.njcc.com
You can find info on where to purchase MSDOS 4.01 and various other
New Port Richey, FL 34655
There is a newsletter, Z-100 Lifeline, published by
Steven W. Vagts
Roseville, CA 95747
Repair, various hardware (the supply is dwindling), and some software can be
GERNWARE ENTERPRISES
Rome, NY 13442
You can contact Gern via internet address at gern@AI.RL.AF.MIL (The Gern)