* [http://people.cs.clemson.edu/~mark/uprog.html A Brief History of Microprogramming]
* [https://lists.debian.org/debian-user/2013/09/msg00126.html Intel processor microcode security update] (fixes the issues when running 32-bit virtual machines in PAE mode)
* [https://web.archive.org/web/20150907195925/http://inertiawar.com/microcode/hawkes_intel_microcode.pdf Notes on Intel Microcode Updates], March 2013, by Ben Hawkes, archived from the original on September 7, 2015
* [https://web.archive.org/web/20030309102752/http://www.eetimes.com/news/97/963news/hole.html Hole seen in Intel's bug-busting feature], ''[[EE Times]]'', 2002, by Alexander Wolfe, archived from the original on March 9, 2003