Today developer Rinnegatamante has released a new plugin that allows you to enable RapidFire mapped to any button. Check out the release notes and the download link provided below.
Release Notes:
This plugin allows you to enable RapidFire on whatever button you want with different types of rapidfire for the best compatibility according to certain anti-rapidfire rules.
Current available modes:
Every Tick = RapidFire rules are applied at each input scan call. This is the fastest rapidfire version but some games won't recognize it (ex: vitaQuake).
Every 200 msecs = RapidFire rules are applied every 200 msecs.
Every 500 msecs = RapidFire rules are applied every 500 msecs.
Every 1000 msecs = RapidFire rules are applied every 1000 msecs.
To set your rules, press START+TRIANGLE to open the config menu.
At the moment configs will NOT be saved due to issues i'm having with SD access on plugins, so for the moment you'll have to set the rules every time you run your game.