[Rawsock]

TRON is rarely used outside of Japan because the specification documents are mostly in Japanese. TRON is more like an industry standard for an embedded RTOS than a concrete implementation. Of course, some open-source code is available, but these are reference implementations. More info:

http://tronweb.super-nova.co.jp/itron.html

[anigbrowl]

Opportunity knocks! I had heard of this way back when but always assumed it had died when the US was lobbying the Japanese government to scale back MITI.

Does anyone else remember MSX? Looks like it never quite went away.

[mark_h]

Thanks; I suspected documentation might have something to do with it. I wasn't aware of the specification-vs-implementation issue though.