I was toying with Oracle of secret demo today and here's something nifty which i'm not sure if someone already found it.

You know that "startup" time which you prepare to run? you can lengthen or shorten the time via the following rom address.

$07/B29A or 0x3B29A in a unheadered rom.

1D is the default value - 01 is the minimum value which link starts running immediately. (80 is the highest value you can go)