1./usr/bin/zsnes

2.-fullscreen

3.More details would be helpful... What joypads do you have? Do there work with Linux? Did you run the jstest program to test them? If they work, they should just work w/ xmame (I personally don't use any other emu).

4.Unfortunately, not at the moment.

3.29. xmame.SDL / fullscreen has a large border around the game.
If the game runs in fullscreen but occupies only a small area in the center of the screen, then your xserver
does not have access to low resolutions (320x240, 400x300, and 512x384, for instance). In the case of
SDL, the window will be in the resolution of closest matching resolution that SDL can switch to for full
screen display.
In this case, you have to add "Modelines" for these resolutions in your XF86config file and add these
resolutions to the resolutions list of your display somewhere in your XF86config file (you know, the list
of resolutions you can switch to using ctrl-+).
You should find modelines that works with most graphic cards in the xmame contrib subdirectory.
If you don’t want to alter your XF86config file, another solution is to run xmame.x11 with the "-scale 2"
argument. In this case, the emulator will use 640x480 instead of 320x240, 800x600 instead of 400x300,
etc. But I don’t recommend it. The scaling uses cpu and the games will run more slowly.
However, if your cpu is fast enough, a better option is to use the effects, e.g., ”-ef 1”. This introduces
advanced render methods to create a nicer looking effect than the simple scaling. On the website you can
see screenshots (http://x.mame.net/gamescreenshots.html) of the different effects.