I got bored, and imported the Jaguar Doom, Linux Doom, the DJGPP Doom, Hexen & Heretic into that cvs web thing.
According to the doom wiki, the Jaguar Doom port is based on the 1.2 source, And it seems that Heretic is based on 1.3 While the Linux GPL’d port is based on 1.10 …
Linux Doom was based on 1.9, the last publicly released version of Doom and Doom 2, but it was never released.
It was intended to be released as version 1.10.