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04-26-24 03:31 AM |
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| 0 users currently in ROM Hacking | 3 guests | 1 bot |
| Main - ROM Hacking - Super Mario Bros. 2 (USA) MMC5 Patch Released - Updated to Version 1.1 | New thread | New reply |
| RetroRain |
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 Fuzz Ball Level: 66 Posts: 903/994 EXP: 2438126 Next: 23725 Since: 09-30-07 Last post: 1934 days Last view: 957 days |
I want to say a special thank you to Disch for all of the help he has provided lately. He just has that expertise, knowledge, and kindness that really helps you out of jam. Thank you Disch! 
I finished converting Super Mario Bros. 2 (USA) to MMC5. I wanted to convert this game for quite a while, and before going back to my SMB2 Special Edition hack. SMB2 USA already uses CHR-ROM, so if you want more PRG and CHR-ROM space, all you have to do is expand the ROM for those two areas. If you encounter any problems while playing this, please let me know. It would most likely be in the form of mirroring errors, which was a big part of the CHR problem I was having. I don't expect there to be any errors, but if there is, please let me know. Thank you, and here's the patch!
Link has been updated as of 02/23/16 with Version 1.1. Download ____________________ My YouTube Channel |
| Hamtaro126 |
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 Cheep-cheep Level: 33 Posts: 181/194 EXP: 212832 Next: 16347 Since: 05-02-07 From: Shelton, WA Last post: 2472 days Last view: 2315 days |
I see two problems:
Mirroring is, you guessed it: wrong Like the SMB3 MMC5 patch and Mario AllStars NES hacks by Infidelity, There's leftover regs from the original game's mapper in the code** ** = (there's one MMC3 reg, $A001, and there is a leftover from Doki Doki Panic (FDS reg $4080) that I see that's also unused but seen in SMB2USA's code, which I will submit to TCRF soon!) If you want, I'll make a fix and a clean-up for you, just say it. ____________________ Mah boi, romhacking is what all true warriors strive for! I wonder what's for dinner? |
| RetroRain |
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Fuzz Ball Level: 66 Posts: 904/994 EXP: 2438126 Next: 23725 Since: 09-30-07 Last post: 1934 days Last view: 957 days |
MMC3's $A001 register should have no affect on my hack, since MMC5 has no $A001 register. $A001 is MMC3's SRAM address. SMB2 USA doesn't use SRAM, but it still has to write to it as part of the mapper prep. So, that $A001 would not cause a problem.
The same thing with the Doki Doki Panic thing you mentioned. Should have no bearing on my hack. Could you just tell me where the mirroring issues occur? On what levels? Thanks. ____________________ My YouTube Channel |
| grimlock |
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 Octorok Level: 13 Posts: 22/29 EXP: 9429 Next: 838 Since: 05-03-14 Last post: 2883 days Last view: 2658 days |
RetroRain, you should consider including some documentation with your mapper hacks. I noticed your recent releases don't include any notes, it seems like it would be extremely helpful for anyone lesser experienced attempting to make use of of them. |
| Hamtaro126 |
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Cheep-cheep Level: 33 Posts: 182/194 EXP: 212832 Next: 16347 Since: 05-02-07 From: Shelton, WA Last post: 2472 days Last view: 2315 days |
$01 in mmc3 is $50 in mmc5 (H Mirror)
$00 in mmc3 is $44 in mmc5 (V Mirror) It's PRG code, Not game data, that is the cause of the glitch, because of errors during outputing in a hex editor, for a new person, this is a common error, Keep the rom hack for PRG/CHR, but revert the mirroring to the original Replace the "A9 00 20 A0 FF" with "A9 44 20 A0 FF" Replace the "A9 01 20 A0 FF" with "A9 50 20 A0 FF" If it isn't looking correct, try some other hex editor, I'd suggest XVI32 DDP leftover: ROM 0x0001E96B (NES $E95B): STA $4080 (FDS Volume envelope) ____________________ Mah boi, romhacking is what all true warriors strive for! I wonder what's for dinner? |
| RetroRain |
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Fuzz Ball Level: 66 Posts: 905/994 EXP: 2438126 Next: 23725 Since: 09-30-07 Last post: 1934 days Last view: 957 days |
Posted by Hamtaro126*sigh* I know this already. Posted by Hamtaro126All of the values were changed. If you do a search in a hex editor for 20 A0 FF, you'll see that all of the preceding values are either A9 44 or A9 50. So again, I ask, where in the game are you experiencing mirroring errors? 
Posted by grimlockAlright. ____________________ My YouTube Channel |
| Hamtaro126 |
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Cheep-cheep Level: 33 Posts: 183/194 EXP: 212832 Next: 16347 Since: 05-02-07 From: Shelton, WA Last post: 2472 days Last view: 2315 days |
Posted by RetroRain As I said, the PRG I had has some incorrect mirroring, so I made some additional modifications, and made a patch for you. Download for RetroRain Unless mirroring is already fixed, in that case, Apologies for the mess! EDIT: Another answer: Mirroring is messy everywhere in the original patch, like pausing in 1-1 for example, this is why you use two hex editor windows or a Binary Comparsion tool like VBinDiff, Things are hard to visually track because they are (semi-boring) numbers! TIP: There is both Xkas-Plus (v1.4) and SchASM (Disch's assembler), You can check them out as they are patchers for systems like NES! ____________________ Mah boi, romhacking is what all true warriors strive for! I wonder what's for dinner? |
| RetroRain |
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Fuzz Ball Level: 66 Posts: 913/994 EXP: 2438126 Next: 23725 Since: 09-30-07 Last post: 1934 days Last view: 957 days |
Back in October, a member at RHDN sent me a message letting me know that there was a problem with the ending of the game. I told him that I would eventually fix it. I haven't ROM hacked in a while because I've been so busy. Today, I finally took a look at it. It was definitely a mirroring issue. On top of that, I found another mirroring issue in one of the levels where you have to dig through the sand.
When I have some more time, I'm going to play through the whole game a little more thoroughly just to make sure that I didn't miss anymore mirroring issues. But I fixed the ones I found. It really is highly unlikely that there are anymore, but I will play through the game soon just to be sure. In the meantime, ditch the MMC5 patch you currently have. Version 1.1 has been released.
Here is the download link. Download And I have updated the link in the first post. ____________________ My YouTube Channel |
| Quick Curly |
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 Giant Red Paratroopa Level: 77 Posts: 1351/1443 EXP: 4172242 Next: 18887 Since: 06-15-08 From: Earth Last post: 21 days Last view: 21 days |
Amazing work, RetroRain! I was thrilled as soon as I saw a new post from you! I'm happy to still see you around. It's been too long! Thank you for the update. Hope you're well.
I'm interested in giving this a full run now as well.  |
| Termingamer2-JD |
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 Ropa Banned: repeat sockpuppeting Level: 53 Posts: 377/739 EXP: 1133817 Next: 23302 Since: 08-06-15 From: England Last post: 2675 days Last view: 681 days |
What help this does hack do? I'm not sure what's to making it better MMC5. ____________________ Jamie Dignam |
| RetroRain |
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Fuzz Ball Level: 66 Posts: 914/994 EXP: 2438126 Next: 23725 Since: 09-30-07 Last post: 1934 days Last view: 957 days |
Posted by Quick CurlyThank you Quick Curly! It's good to see you too!
Posted by Termingamer2-JDIt's mainly for hacking purposes. It gives you a better base ROM to work with. I'm actually refraining from doing anymore mapper hacks, since I would rather produce actual hacks of games. However, for my next hack, which shouldn't take me more than 8 days, from start to finish (I planned it out), I actually have to convert the game to MMC5, because the game lacks free space, and there are a couple of other things that the mapper will allow me to do. I plan on releasing that mapper conversion AFTER I finish and release my hack of that game. I will be getting back to my SMB2 hack soon, but I want to do this hack first. First, I'm going to thoroughly play through SMB2 to make sure there are no more problems with my mapper hack, and then I'm going to do this new hack. I'll give you a hint -- It's another SaveRAM hack, for a game that desperately needs it. ____________________ My YouTube Channel |
| Termingamer2-JD |
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Ropa Banned: repeat sockpuppeting Level: 53 Posts: 379/739 EXP: 1133817 Next: 23302 Since: 08-06-15 From: England Last post: 2675 days Last view: 681 days |
Sounds cool, also thanks, I'm kind of the noob to ROM hacking so didn't know, but it seems a nice enough idea.
I'll give a playthrough of your hack if possible soon. ____________________ Jamie Dignam |
| RetroRain |
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Fuzz Ball Level: 66 Posts: 915/994 EXP: 2438126 Next: 23725 Since: 09-30-07 Last post: 1934 days Last view: 957 days |
I tested SMB2 MMC5 thoroughly. There are no more bugs. Version 1.1 is the final version. ____________________ My YouTube Channel |
| Googie |
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Giant Red Paratroopa Level: 77 Posts: 1185/1407 EXP: 4180995 Next: 10134 Since: 02-19-07 From: Brooklyn, NY Last post: 8 days Last view: 8 days |
If I were to patch this over my hack after I'm done with my SMB2 hack, will I run into any problems? I'm just curious.  ____________________ My Linktree |
| RetroRain |
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Fuzz Ball Level: 66 Posts: 916/994 EXP: 2438126 Next: 23725 Since: 09-30-07 Last post: 1934 days Last view: 957 days |
Assuming the game hasn't been ASM hacked in anyway, there shouldn't be a problem. But you don't really need the patch if you're not going to ASM hack or use MMC5's capabilities.
But if you're going to patch it to your hack, I would advise creating a backup first. ____________________ My YouTube Channel |
| Main - ROM Hacking - Super Mario Bros. 2 (USA) MMC5 Patch Released - Updated to Version 1.1 | New thread | New reply |
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