[schoen]

Huh, I hadn't been aware of that example. But Wikipedia seems to think that the lockout chip came in in 1983 in a revision of the TI-99/4A design and that earlier models didn't have it. In that case, it might be roughly tied with the NES.

[tadfisher]

The NES shipped in limited quantities in 1985. The Family Computer shipped in 1983, and it lacked any sort of lockout technology, leading to the proliferation of unlicensed games in Japan and ultimately the development of the 10NES system for the North American NES.