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Main - ROM Hacking - SMB2J - Retrousb Replica (for Repros) New thread | Thread closed


ShaneM
Posted on 11-21-14 08:16 AM (rev. 2 of 11-22-14 06:29 PM) Link | Quote | ID: 159035


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I realize that Retrousb stopped making their SMB2J repro two years ago. It is sought after by gamers and collectors because it has a very unique function: A level/world select option. So I thought to myself, I'm a fan of the game and a collector, though I prefer the real deal FDS version, many gamers are being robbed by not having this gem and Ebay enthusiasts are taking advantage of this fact with prices. So since the game is discontinued and nobody has a ROM dump of it (including myself; also because of its strange mapper) I thought what if I hacked a common pirate version to remake it? So that's what I did! I made this for two reasons:

1) To get this extinct item back into circulation
2) To complete my SMB2J ROM collection (yes, I own a physical Retrousb copy, which is how I was able to find the differences through gameplay)

It is based on the version without the titlescreen. The ROM that was used as a base is called: "Super Mario Bros 2 (Lost Levels) (Unl).nes". (Screenshot below.)

It took me about 4 hours to hack everything to make it match. I'm glad I own a physical copy to be able to find key differences. Some were having green piranhas throughout the game, except upside down ones. MARIO/LUIGI names being replaced with SCORE on the status bar, being able to select World 9 with three lives (hard thing to pull off, heh). Fixing bunnyboy's 8-4 ERR. 01 message (the only real glitch fix I made in this version). Red colored springs throughout. That strange L symbol replacing the star on the Flagpole on non-X4 stages. So yeah...it matches the rarely sought after Retrousb version to its fullest. But this is the good part: I used a different ROM than the one they used (I think; not sure what bunnyboy used if even an NES ROM. From what I hear he put all relevant FDS hardware on the PCB). Though the gameplay is 100% identical to that version, I am 100% sure the code isn't. So go out there all you SMB2J lovers and make a repro of this version to your heart's desire. I ask that you just don't charge for it. I spent 4 or so hard hours working on this and I give it to you all freely. --ShaneM, ASM Master

PS: With this, I now own every single SMB2J version, whether it be pirated, repro-ed, FDS or VC version. My collection totals to 18 different versions in total (minus hacks of this game, including mine). I'll post the names of all of them, soon. My question is, do you all think I should make a separate patch of this that fixes glitches, similar to my FDS SRAM verson (the one with SMB1 on Side A)? Would that be something sought after?


Also, a link to the discontinued item: http://www.retrousb.com/product_info.php?cPath=31&products_id=93
Original pirate ROM I used CRC16: 7F10

EDIT: Oh yeah, I made it to start off with eight stars, too, on the titlescreen. (Though it was unnecessary, as A-D are playable on this version without needing stars.) I just added stars for the integrity of it. Also, I credit doppleganger for making the SMB2J disassembly.

Download: SEE BELOW




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drunkenjesus
Posted on 11-22-14 06:13 PM Link | Quote | ID: 159040

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Reproducing a reproduction, nice.

Dunno how much interest their would be in a bug fixed version, theirs not really any game-breaking bugs in the game that I've encountered.

Plus with it being a pirate rom I dunno how many people really play it over the fds, VC, or SMAS versions.

With the impressive skills you have it'd be cool if you could fix the pirate NES Super Mario World(bad physics, horrible music engine) or finish the Super Mario Bros Special hack (it's open source & nearly complete it just needs the enemies and power-ups from the pc88 version)

ShaneM
Posted on 11-22-14 06:29 PM Link | Quote | ID: 159042


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Posted by drunkenjesus
Reproducing a reproduction, nice.

Dunno how much interest their would be in a bug fixed version, theirs not really any game-breaking bugs in the game that I've encountered.



Thanks. This game version really doesn't fix any Nintendo-original bugs. Its purpose was to resurrect an extinct build of this game. The key function to why gamers preferred this version was the level/world select option. Though I could fix bugs, I'm leaving it the way it is for novelty purposes. But, my SMB1 SRAM hack fixes every known bug to SMB, found here http://acmlm.kafuka.org/board/thread.php?id=8030

Here is a new build where I correct a palette error; I can honestly say that this version is now 100% matching the Retrousb version and ready for reproducing. I'd also like comments from anyone who has made a repro on this to let me know how it works on real hardware. --ShaneM, Master of ASM

http://www.mediafire.com/download/vtv47pyuqydf9yt/Super_Mario_Bros._2_(J)_(Retrousb)_[p1].ips

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ShaneM
Posted on 11-28-14 12:18 AM Link | Quote | ID: 159076


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This is an example of the Retrozone price ripoffs I was referring to: http://www.ebay.com/itm/Super-Mario-Bros-The-Lost-Levels-NES-Reproduction-Cartridge-2j-Green-TESTED-/331387195753?pt=Video_Games_Games&hash=item4d28375169 --ShaneM

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Proveaux
Posted on 12-07-14 06:38 AM Link | Quote | ID: 159106


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Posted by ShaneM
I'd also like comments from anyone who has made a repro on this to let me know how it works on real hardware. --ShaneM, Master of ASM

Would like to test out but it would need to be a more common mapper. There is one named "Super Mario Bros 2 (J) [p1]" that is mapper 4 that works similar to yours but on real hardware there is an issue with the status bar scrolling.

ShaneM
Posted on 12-07-14 06:51 AM (rev. 4 of 12-07-14 06:54 AM) Link | Quote | ID: 159107


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Posted by Proveaux
Posted by ShaneM
I'd also like comments from anyone who has made a repro on this to let me know how it works on real hardware. --ShaneM, Master of ASM

Would like to test out but it would need to be a more common mapper. There is one named "Super Mario Bros 2 (J) [p1]" that is mapper 4 that works similar to yours but on real hardware there is an issue with the status bar scrolling.


I actually owned this exact same SMB2J pirate cart in which I based my version on. I had gotten it off of Ebay and I used a Famicom converter and it seemed to work fine on it. I'd imagine this one would, too. It uses Mapper 40.

Thanks for posting! --ShaneM

PS, if you PM me the broken version that you have, I can fix it. I already know what you are talking about, it's loading an LDA #$58 instead of LDA #$BB for the status bar offset.

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Main - ROM Hacking - SMB2J - Retrousb Replica (for Repros) New thread | Thread closed

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