Saving highscore.dat hi file more frequently

[Funkoid]

I need a mechanism which basically saves the hi file for a highscore.dat supported rom once every 15-30 minutes. Is it at all possible?

If its not whilst the rom is running, could a code modification perhaps be made that allows for a save of a second .hi file that contains a more up to date nvram used for only reading high score data from?

[EMDB]

Your flooding the forum with this.