Anyone that's interested in Phantasy Star for Genesis, here's some info for Phantasy Star 3
The ingame game save method is different from the emulator's method of saving your game.
I could just use the "save" method that the emulator provides, but in Phantasy Star, there is already a game save area.
It is more true to the original game.
You must pay 5 coins at an INN to save your game.
At first I was having difficulties saving my game this way.
The opening screen checks for saved games.
(It wasn't able to load a saved game).
You need to set permissions on a directory.
/home/zaurus/.dgen/ram
The "ram" directory contains the Phantasy Star built in game save file
I set it to rwx for all users in Tree!Explorer.
I enclosed a screenshot of the directory on my C3100.
BTW, the "saves" directory will contain game save states, which are made using the emulator's hotkey - 'k'
These keys do these actions in Phantasy Star 3
A = Talk, Search, Purchase items
S = Backs out of previous action
D = Invokes action, Uses weapon
There are more functions for these keys, but I haven't gotten very far in the game yet.