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Main - ROM Hacking - Mega Man 1 GB | New thread | New reply |
RT-55J |
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Armor Guardian Level: 81 Posts: 586/1562 EXP: 4889387 Next: 103462 Since: 02-23-07 From: Wild Side Arcade Last post: 314 days Last view: 55 days |
I got off my lazy bum and did some actual ROM hacking for the first time in my life. I'm not a programmer, so don't be expecting a level editor for this game, but it should be perfectly possible to make a simple hack with this data unless I'm an idiot.
Notes:
Here's a patch that uses this information to modify the first two rooms in Ice Man's stage. Apply to "Mega Man - Dr. Wily's Revenge (U) [!].gb" |
kuja killer |
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Level: 55 Posts: 56/628 EXP: 1243923 Next: 70266 Since: 03-20-07 From: Lake Havasu City, Arizona Last post: 282 days Last view: 7 days |
Wow that's cool stuff there.
I died a few times on your mini test hack. right where that one sniper joe is, and then due with the 2 suzzys on the next room. Although...how the heck do I get the VBA's hex editor to go past FFFF hex? ..i tried asking in IRC but no one knows. http://www.a3share.com/members/1119/hex.PNG hex The Goto function doesn't let me go further than it either. |
RT-55J |
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Armor Guardian Level: 81 Posts: 587/1562 EXP: 4889387 Next: 103462 Since: 02-23-07 From: Wild Side Arcade Last post: 314 days Last view: 55 days |
I'm not a programmer, but I think the GB's processor only has 64kB of addressable space, and that's exactly what the memory viewer is showing. The only parts of the ROM shown there are the two (?) banks that are currently switched in.
You're better off using a separate hex editor to modify the game; preferably one where you can adjust the width of the window. |
Trax |
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Yellow Stalfos Level: 71 Posts: 548/1145 EXP: 3035914 Next: 131200 Since: 07-06-07 From: Québec Last post: 3627 days Last view: 2879 days |
Hmmm, I thought you were talking about a ROM that is 1GB in size... |
Insectduel |
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Hammer Brother Level: 68 Posts: 136/1069 EXP: 2687877 Next: 40923 Since: 02-16-08 From: Insectduel's office Last post: 1257 days Last view: 1257 days |
That was cool. You know I was planning to hack the game eventually soon whenever I need to.
I am expected to make at least 1 level from the GB to my NES MM1 game soon but the sizes may be different. |
RT-55J |
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Armor Guardian Level: 81 Posts: 597/1562 EXP: 4889387 Next: 103462 Since: 02-23-07 From: Wild Side Arcade Last post: 314 days Last view: 55 days |
I made a patch that makes the the title screen to say "Mega Man World" like the Japanese version. Except for one tile, all of the graphics were already in the ROM. I have no clue why they didn't bother implementing it. The title screen data is at 0x1814B-18226 with the graphics right after it. It also looks like the graphics and data for "Weapon Get", Wily Castle, and Wily Space Station screens are after it.
In other news, I've come closer to fully deciphering the level format. It looks like a lot of pointers are involved, making it difficult to edit by hand. :/ |
Main - ROM Hacking - Mega Man 1 GB | New thread | New reply |
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