Some stuff about the ARM Board A20-OLinuXino-LIME2 from Olimex that I use as a micro-server. In particular how to install a pristine Debian on it (without console cable).
A few non-common machines encountered at work: MIPS, HPPA, …
How to emulate different systems and architectures on your regular PC.
Description of a network of diskless machines used for teaching at University Paris XI, and then at University Paris Diderot (Paris 7).