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To set up a mainframe environment on your personal computer, you will need two main components: the (the hardware simulator) and a z/OS distribution (the software). hercules z os 21 download link
IBM occasionally offers free limited-time access to a modern z/OS mainframe environment via the web (z/OS Trial) which does not require local installation. This is useful for learning JCL and ISPF but does not run on a local Hercules instance. Elias clicked through the third page of a
After downloading the emulator, follow these steps to install Hercules z/OS 2.1: This is useful for learning JCL and ISPF
IBM distributes z/OS for testing via the . Version 2.1 was distributed to universities and IBM business partners on physical DVDs.
, obtaining and running z/OS 2.1 is generally a violation of IBM's software licensing unless you have a specific legal agreement. Hacker News Key Technical Review Version Compatibility : To run z/OS 2.1 or newer, you must use Hercules 4.x (Hyperion)
You need a TN3270 client (like x3270 or WC3270 ) to actually "see" the screen.