The Charon emulator products allow users of SPARC, PA-RISC, Alpha, and VAX legacy systems to replace their native hardware in a way that requires little or no change to the original system configuration. This means you can continue to run your applications and data without the need to switch or port to another platform. The Charon emulator software runs on commodity, Intel 64-bit systems ensuring the continued protection of your investment.
The image below shows the basic concept of migrating physical hardware to an emulator: