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Running retro software under QEMU, the open source machine emulator and virtualizer. See also the wiki page for the [emulation] tag.

QEMU is a generic and open source machine emulator and virtualizer.

When used as a machine emulator, QEMU can run OSes and programs made for one machine (e.g. an ARM board) on a different machine (e.g. your own PC). By using dynamic translation, it achieves very good performance.

See the tag wiki on guidance as to which emulation questions are on-topic.