qemu-system 1.4.0+dfsg-1expubuntu4 (amd64 binary) in ubuntu raring

 QEMU is a fast processor emulator: currently the package supports
 ARM, CRIS, i386, M68k (ColdFire), MicroBlaze, MIPS, PowerPC, SH4,
 SPARC and x86-64 emulation. By using dynamic translation it achieves
 reasonable speed while being easy to port on new host CPUs.
 .
 This package provides the full system emulation binaries. In this mode
 QEMU emulates a full system, including a processor and various
 peripherals. It enables easier testing and debugging of system code.
 It can also be used to provide virtual hosting of several virtual
 machines on a single server.