Description: The Hercules emulator is a software tool designed to simulate IBM mainframe systems, allowing users to run applications and operating systems that were originally intended for mainframe hardware on more accessible platforms like Linux and Windows. This emulator is especially valuable for developers, researchers, and enthusiasts who want to explore the mainframe environment without needing the expensive original hardware. Hercules provides accurate emulation of IBM system architecture, including CPU, memory, and input/output devices, allowing for a user experience close to the real thing. Additionally, its open-source nature encourages collaboration and ongoing development, enabling the community to contribute to its improvement and expansion. Hercules is compatible with a variety of operating systems, including z/OS, OS/390, and VM, making it a versatile tool for education and the preservation of legacy software.
History: Hercules was created in 1999 by Roger Bowler and a group of collaborators, aiming to provide a low-cost alternative for accessing mainframe systems. Since its release, it has significantly evolved, incorporating new features and improvements in emulation. Over the years, it has gained popularity in the mainframe user community, especially among those looking to learn about this technology without the need for expensive hardware. In 2005, Hercules became an open-source project, allowing a broader community to contribute to its development and maintenance.
Uses: Hercules is primarily used for education and training in mainframe environments, allowing students and professionals to practice and experiment with mainframe operating systems and applications without needing access to real hardware. It is also used by companies that wish to maintain and run legacy applications that depend on mainframe systems, facilitating migration to more modern platforms. Additionally, it is a valuable tool for researchers studying system architecture and the history of computing.
Examples: A practical example of using Hercules is in educational institutions offering courses on mainframe systems, where students can use the emulator to run z/OS and learn about its operation. Another case is that of companies using Hercules to test software updates in a controlled environment before deploying them on their real mainframe hardware.
