Minibiatch is a RISC architecture invented by Ben Russell. It can have any degree of bits, though 16 is most practical.
The specification has been removed as it was not public domain. See license below.
The example has been removed as it is unclear whether the license below includes it, in which case it is not public domain.
"Minibiatch is made by Ben Russell, 2006. Anyone who wishes to do anything with Minibiatch including redistribution of the specification must include this quote somewhere. That's all I ask."
- User:GreaseMonkey for a specification of Midibiatch, which isn't an esolang.