Pawn Drops and Stalemate in Shogi

[Levi Aho]

I've got a question regarding pawn drops and stalemates. I understand
that a stalemate is nearly impossible in shogi and that it is counted as
a loss for the stalemated player (a rule I've always felt makes more
sense than the western chess rule of a draw).

Now, one cannot make a pawn drop that causes checkmate, so can you,
theoretically at least, make a pawn drop that causes stalemate, or is
that disallowed also?

Furthermore, could someone point me at a rules reference (online, I'm a
bit short on funds to be buying any books at the moment), that's
comprehensive enough to include this sort of obscure detail?

Thanks in advance,
Levi Aho