dosemu2 is an emulator for running DOS programs under linux. It can also serve as a VM to boot various DOSes.
You can get source code from git repository with the following command:
git clone https://github.com/dosemu2/dosemu2.git
or browse the repository .
daily-built binary packages for fedora
daily-built binary packages for openSUSE
Visit the the dosemu2 wiki for documentation on how to install, run, and configure dosemu2.