Roopert made a good thread about this 8 months ago. This should make things clearer.
https:/​/​www.​speedrun.​com/​smb1/​thread/​bh3h9

Oh, I thought that doesn't matter as long as the timer is on 0.00 when the 400 appears on the top right of the screen. And since I'm not going for BBG any time soon I didn't think about framrules on the tilte screen either. Thanks for clarifying that! I'll adjust my timing.

Hey, I'm a little bit confused about a recent run of mine. I had an average 1-1 underground finishing with a 379 but my Split shows a 29.4 in the end what should be the time you get after a successful FPG. I clearly didn't do that so I'm a bit worried that it is caused by my emulator or something that could invalidate future runs of mine. Is it somehow possible t get that time without a FPG? Or did I split wrong?