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Machines at a glance

Choose the machine with --machine, or from the Machine > Machine Type menu. Switching resets the machine.

--machine Machine Notes
48k ZX Spectrum 48K The original rubber-key Spectrum
128k ZX Spectrum 128K AY sound and memory paging
plus3 ZX Spectrum +2A/+3 Extended paging
next ZX Spectrum Next The default. Full Next hardware

Even a 48K session needs an SD-card image, because that is where the 48K BASIC ROM lives.

Chapter 5, Running programs, explains what actually changes between them.