[MaxBarraclough]

I'm reminded of the 'xcodes' bytecode-interpreter/virtual-machine used in the original Xbox, as part of its security model.

See [0] and page 25 of [1]

[0] (PDF) https://cs.oberlin.edu/~ctaylor/classes/341F2012/xbox.pdf

[1] (PDF) https://events.ccc.de/congress/2005/fahrplan/attachments/674...