Sonic 3 - Unused Horizontal Interrupts

In Sonic the Hedgehog 3, there exists unused horizontal interrupt code. The code in question seems to have been intended for an alternative water effect.
PAR/GG codes for Sonic 3A:
0050FC:6000 or ABJA-AA96
0050FE:004E or K3JA-AAH8

[@ongakuwotabeta]

So THATS why in Sonic 2 when you try to force a water level to be 2 players, it doesn’t load 2 screens, it loads one screen but the 2nd player is in the top left corner, the camera is not 1p centered even, and the graphics are EXTREMELY corrupted (though that could be because you’re not loading the right 2p level in the first place, never mind a water level)

[@SilverSonic1992]

Yes, SEGA never programmed split screen mode to work with water. It is possible though - see the Sonic 2 VS ROM hack.

[@Brainulator9]

That, and the level's graphics have to be constructed with 2P mode in mind.

[@alexnocraphole]

@@SilverSonic1992 I remember E-122 first demonstrating the hack... by his admition, water levels were lagging *a lot* without proper code optimization.

[@DAJTheYouTuber_2007]

as someone once said before, waiter waiter, more Sonic 3 content please

[@SilverSonic1992]

"The joke is so old now. Just stop!"

[@some_body_else3636]

what have i started…

[@That_Soldier_Nick]

My sonic era is coming back 🗣🗣🔥

[@oshabot1646]

Welcome back

[@SilverSonic1992]

Thanks.

[@epicjoshy1485]

The unused water effect seems like the same effect used in Ristar in Round 2. MDTravis also demonstrated the effect in Sonic 1 too: m.kzbin.info/www/bejne/oofXmKSoipqggtE

[@SilverSonic1992]

Ristar darkens the water palette based on depth, this transfers the normal palette as if the water were to end at a certain point. It's not really that similar.

[@epicjoshy1485]

Huh. Interesting. 🤔

[@ScarlettJett34]

5:39 Is it possible to prevent the palette from switching after the water surface is out of view?

[@BengalEmpire767]

Woah, I was just watching your videos like an hour ago and now this drops. Timing 😅

[@TheWaterMiners]

3:07 Is there any footage of what it looks like there?

[@SquidwardTentacles-uu9wv]

epic video

[@alexnocraphole]

What does the Sonic 3 water system look like on a Genesis 3?

[@SilverSonic1992]

I actually don't know!

[@alexnocraphole]

@@SilverSonic1992 My guess is that it appears at the wrong scanline or just doesn't appear at all... I'd search it up, but I'm trying to avoid Movie 3 spoilers right now.

[@Brainulator9]

6:05 looks illogical.

[@netkilrblx]

silver since you know the ym2612 fm chip send some patches x

[@SilverSonic1992]

There's plenty of patches available online.

[@gengar-1997]

hello.

[@PilaCiu]

What does the prototype code say about this?

[@SilverSonic1992]

This code isn't in the prototype.

[@That_Soldier_Nick]

​@@SilverSonic1992in ehat- ehat- IN WHAT build says about that [god my writing is strok9mg- see?? I cant talk]

[@some_body_else3636]

how about sonic 2 content?

[@CovenantAgentLazarus]

How about no

[@some_body_else3636]

@CovenantAgentLazarus come on we need some content about the best classic sonic game and that's not an opinion that's a fact

[@NGO9000]

Enjoying all the Sonic 3 content 🙏 if only sega were to remember continuity and cannon

[@riqopowpow]

Ok nerd

[@SilverSonic1992]

Erm... Ackshually-

[@some_body_else3636]

shut up bro, you won't be able to make content this good in a year or two

[@JSC64]

@@SilverSonic1992 Insert nerd emoji here