Determine if you need (Applications Developers Corporate Delivery) versions
Yes, using the Hercules emulator. But you still need legally sourced software media. Z Os 1.10 High Quality Download
Key features of z/OS 1.10 included:
z/OS is distributed across multiple volumes (res-volumes). A high-quality download must include the full set (IPL, Master Catalog, and User Catalogs). and User Catalogs).