Pharo VM

The code for the VM is hosted on github where a readme file explains the basics requirements of how to build the VM.

There are also several secondary sources which describe certain aspects of the VM:

• Here the guide, which covers all VM building process in deep detail,
  made by Mariano Martinez Peck: part 1 and part 2.
   
• There is also a 1:30 hour PharoCast