You need Bochs. If you just want a glance, use -- ./configure && make && sudo make install to compile & install Bochs, or -- ./configure --enable-debugger --enable-disasm && make && sudo make intall to have a Bochs with debugger, or -- ./configure --enable-gdb-stub && make && sudo make intall to have a Bochs with GDB interface. (Bochs debugger & gdb-stub are mutually exclusive)