openbsd-ports/emulators/qemu/pkg/DESCR

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QEMU is a generic and open source processor emulator
which achieves a good emulation speed by using dynamic translation.
QEMU has two operating modes:
* Full system emulation. In this mode, QEMU emulates
a full system (for example a PC), including a processor and
various peripherals. It can be used to launch different
Operating Systems without rebooting the PC or to debug system code.
* User mode emulation (Linux host only). In this mode,
QEMU can launch Linux processes compiled for one CPU on another CPU.