I have created a few programs for working with CAS files for Sord (castool is part of MESS). CAS is a short for CASsette format used in the Mess emulator. It is actually a binary file, as it was actually recorded on a tape in the form of an audio signal.

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Sord utils 28/01/2024
Sord utils 28/01/2024
Sord utils 28/01/2024
Sord utils 28/01/2024
Sord utils 28/01/2024
Sord utils 28/01/2024