Bochs

Bochs is a super flexible, open-source emulator for IA-32 (x86) PCs. It’s written in C++ and can run on just about any popular platform you can think of! The Bochs project does a great job emulating the Intel x86 CPU, common I/O devices, and even has its own custom BIOS.

What Can Bochs Do?

Right now, you can set up Bochs to mimic several types of CPUs like the 386, 486, Pentium, Pentium Pro, or AMD64. You also have the option to use instructions like MMX, SSE, SSE2, and even 3DNow!

Running Operating Systems

One cool thing about Bochs is that it can run most operating systems inside the emulator. This includes Linux, Windows 95, DOS, and Windows NT 4. It was created by Kevin Lawton and is still being maintained today.

How Does It Work?

You can compile Bochs to work in various modes—some are still being developed! Generally speaking, people use Bochs for complete x86 PC emulation. This means it simulates the x86 processor along with hardware devices and memory.

A Machine Inside a Machine

This setup lets you run different operating systems and software within the emulator on your workstation. It’s like having a mini machine inside your main machine! For example, let’s say your workstation runs Unix/X11 but you want to use some Win'95 applications.

Your Solution: Bochs

No worries! With Bochs, you can easily run Windows 95 and its software right on your Unix/X11 workstation. It will pop up a window on your screen as if it's simulating a monitor from an actual PC!