Bochs is a highly portable open source IA-32 (x86) PC emulator written in C++, that runs on most popular platforms. It includes emulation of the Intel x86 CPU, common I/O devices, and a custom BIOS. Currently, Bochs can be compiled to emulate a 386, 486, Pentium, Pentium Pro or AMD64 CPU, including optional MMX, SSE, SE2 and 3DNow! instructions. Bochs is capable of running most
Operating Systems inside the emulation including Linux, DOS, Windows 95/98 and Windows NT/2000.
Brief summary of changes since vorsion 2.1.1: