DosCard
DOSBox fork for embedded devices
...Like modern cheap microcontrollers.
This version supports only (de-facto) standard PC hardware from mid-90s: S3 SVGA for Video and SBlaster for Audio.
Another part of the project is a software library, which allows you to create safe multithreaded multi-instanced DOS VMs environment for your own project.
More information can be obtained through SVN commit history and plain text description files inside the code tree.