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Rank: Bowser
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That's a cool series of screens you made there. 8)
May 16th...
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"ZombieHunterX" wrote:Even stranger, it DOESN'T work in nnNesterJ. Yeah, that was the first one I tried, too. I wonder exactly what it is that makes it different?
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Rank: Bowser
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certainly interesting. there are two bonus worlds that weren't actually supposed to be playable in the game, but are in there and some odd way, accessible.
 
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Seeing as how these are just ROM dumps, I wonder how it can be accessed on the cartridge?
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Rank: Bowser
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Well, world -1 can be accessed on the cart (Roll has done it, I can't seem to :P) but this one I'm not so sure about...
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You would think that somebody would've stumbled onto it at some point... It may also be only on certain carts (i.e. Super Mario Bros. but not Super Mario Bros./Duck Hunt). I'll have to try and find some walls to try and jump through, or something. :wink:
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Rank: Bowser
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maybe it's just the way the emulator opens the ROM or something that makes it go to that level, as stated it only does it when you drag and drop the ROM. so we know the level is in there, but accessing it on the real cart may very well be impossible.
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Rank: Bowser
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I'm wondering if maybe it was a test level for Mario's swimming ability (since 1984 :wink: ). Maybe they just never removed it. I've heard of the same kind of thing on SMB 3, though I haven't looked to much into it...
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Rank: Bowser
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that's entirely possible, test levels are rarely removed from the final product unless space is a big concern.
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Now I'm wondering if this is possible (I don't know much about this, but here goes). Maybe through a different mapper? I'm not entirely sure how those work, but maybe something else can be accessed through those. I wouldn't even know where to start, or if that can be done...
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I doubt you could use a different mapper, the game code funtioning properly is very reliant on the mapper as far as I know. for example, the MMC5 mapper, the most crazy one that was only used on two games (Kirby's Adventure, and Castlevania III) is responsible for the great graphics and scrolling in those games. it's the mapper that prevents SMB from being able to scroll backward.
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Rank: Bowser
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I'll have to do more research, but I was thinking there was more than one mapper for each kind of chip. That'd be interesting to find out...
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to my knowledge the mapper is contained on a separate chip inside the cart.
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"NES-Luke" wrote:to my knowledge the mapper is contained on a separate chip inside the cart. Ah... you're probably right. I'd really like to find out about this. I'm definately going to Google later on! :D
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I tried the glitch on two copies of the SMB ROM (no splits), and only one of them worked. It makes me wonder if it's an unoriginal ROM. If this level IS on the cartridge, it might be possible to play it on the NES with a Game Genie.
 
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"ZombieHunterX" wrote:If this level IS on the cartridge, it might be possible to play it on the NES with a Game Genie. Now, how would we figure something like that out? I know there are ways to make cheats in emulators through hex, is that how the Game Genie is programmed? Maybe there's a way to get into the ROM to try and figure out where it's at. Is there a way to view a ROM in a text editor? Or maybe it being an image won't help. I don't know... darn it! Wish I had more know-how...
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yes, the game genie uses Hex as I recall, there are a few emulators that have a code searching feature. but they generally just search the hex that's being sent from the ROM at that point in time. Perhaps if one were to use an emulator with the searcher. And play with codes during level loading it could be uncovered. once the proper game genie code was deciphered using the emulator it would work on the actual console assuming the ROM and cart are the exact same.
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Rank: Bowser
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OK, I've also played the level, and that is very weird. I haven't seen that one documented anywhere before.
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The Game Genie code already exists.
Taken from Game Genie Code Oddities (http://ggco.freewebpage.org/smb1/worlds.txt)
YSAOPE + YEAOZA
"Level Select" code!! Lets you start on any world you want! Here is how to get to the level select screen When you first start out, you are in a new world (0-1) and you have to finish this level to get to the level select screen. Here's how: Swim (yes swim) past the first pipe you see and keep going until you see some water at the bottom of the screen. Swimover the top of the blocks that are above the water, but not too far. Then swim down and backwards a little to drop down through the little opening in the blocks that lets you get to the bottom of the screen. This part is very important because if you aren't at the bottom part of the screen, you won't be able to finish the level. Once you get to the lower part of the screen,just keep going to the end of the level. When you get to the end, it will say "Thank You Mario, but our Princess is in Another Castle". To get the game to continue, you have to press"B". Now your at the "Level Select" screen! Just press "B" until you see the world you want (at the top of the screen), and then press "Start".
I had tried this out a few weeks ago on the SMB/Duck Hunt and stand alone versions of the game and it definitely worked.
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