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Table of contents

The zx-state file format
Block types

Copyrights and acknowledgements

The zx-state file format and associated documentation is maintained by Jonathan Needle.

The latest version of the documentation can always be found at:


Any enquires regarding the specification and associated documentation should be directed to:


In particular, it is envisaged that other emulator authors will contribute to future versions of this specification.

Lastly, you are encouraged to add zx-state support to your emulator or utility program. A list of supporting programs will be maintained here.

  Copyright © 2001 - 2011 Jonathan Needle Top