Hi tcmichals ;
The Edison has two microprocessors, an Atom and the Quark. The Quark it's not activated yet and there is no way to use it in the meantime. In order to use a Real Time OS, take a look at this link
This method has worked before PREEMPT_RT-enabled Linux Kernel 3.10.17 on Intel Edison so you could try it too.
When will the Quark be supported/activated?
You can already use the Quark, take a look at this tutorial on how to do it: Creating applications with the MCU SDK for the Intel® Edison board | Intel® Developer Zone. I think it will be helpful for you.