Building requirements for artillery

[Hosakawa Tito]

I seem to be missing something in my quest to build cannon. It is 1309 in my campaign, are cannons available yet ??
I have several provinces to fortress level with cannon foundries,gunsmith guild. Do I need the Siege Engineer Guild too? That is the only thing I haven't built yet. Any ideas?

[Muneyoshi]

Right click on the cannon foundry and it will tell you (sort of) if cannons are available yet. What I mean is, if it says you build canon foundry+anotehr building to get a Serpentine, if it says "Alone Allows: Demi-Culverin" orwhatever it says, then you know they are there

[Sandy-San]

you can't build gunpowder units until late era (start 1321?) but you can build buildings. you'll just have to wait a while... (i'm in the same position - it will all be over by the time i finally get cannons onto the battlefield...)