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Yeah, it's a great skill to have. My method works on all of the systems I have listed on my YouTube channel. The main thing you want to have is a memory dump of the game. I'll try and make an example for a Game Gear game. I never messed with the Game Gear like that (hacked a few codes).
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Thanks a whole lot, I didn't expect you to or anything, it's greatly appreciated.
I basically hack the Game Gear/SMS exactly as I do with PSX, use Cheat Engine with a conversion formula.
It's easy for me to save a memory dump with Fusion and CE, but I'm sure you know how anyway lol.
The best resource of info about the RAM areas is here:
http://www.smspower.org/Development/MemoryMap
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Earthworm Jim Special Edition (E)
Invincibility
This game if your manually patching, it's the 5th instance of this string...
Infinite AmmoCode:003960f053104e752f
-------------------------------------Code:4E754A790002F60E6B
Jurassic Park (U)
Infinite Time
--------------------------Code:0C39000000FFAA
Figured I would throw this in there:
http://www.megaupload.com/?d=4YG0U2ODLast edited by Mezmorize; 12-15-2010, 04:37:11 AM.Comment
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Couple loose ends to tie up before going to the next game.
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Chuck Rock (E)
Invincibility
2nd instance of
Infinite LivesCode:36766a0833fc
----------------------------------------------Code:726a0460
Amazing Spider-Man vs. Kingpin (E)
Invincibility
Code:1b7c0001d7964a2e
Infinite Web
2nd instance
----------------------------------------------Code:4A6DD7526C0442
Batman Returns (U) [FC5A302F]
Forgot I made these patches a couple days ago, not sure the places to manually patch...
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Final Fight CD (E)
Infinite Time
Place a 00 before this hex string
----------------------------------------------Code:147201
Last edited by Mezmorize; 12-16-2010, 02:56:02 AM.Comment
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3 Ninjas Kick Back (U)
737FE116
Infinite Time
Infinite LivesCode:4A387C1B660850F9
Invincibility (Can still loose half your health, the Invulnerability code is better, the character don't blink, and you don't have to take a hit before it activates)Code:3D7C002000080C
InvulnerabilityCode:3D7C001E009A
Code:6704536E009A
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Wonder Dog (U)
Invulnerability
Infinite LivesCode:06536D24
InvincibilityCode:426D241261
----------------------------------------------Code:0000E84A6D2412
5 in 1 Sega Arcade Classics (U)
Streets of Rage
Infinite Time
P1 Infinite HealthCode:44FC0004CD0D4E
----------------------------------------------Code:2800326710
5 in 1 Sega Arcade Classics (U)
The Revenge of Shinobi
Invincibility
3rd Instance
Infinite LivesCode:3A6A0831FC0000D13A
3rd Instance
Code:4A406A0611FC
Last edited by Mezmorize; 12-17-2010, 06:01:43 AM.Comment
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Mezmorize,
I've manually patch different versions than yours since most games I have is (U) or (J).
I don't know if this can be useful for you or someone else.
Here's the results:
4 in 1 Sega Arcade Collection Limited Edition (J) (same as 5 in 1 but without Monaco GP) [OK]
Amazing Spider-Man vs. Kingpin (U) [OK]
Chuck Rock (U) [OK]
Earthworm Jim Special Edition (U) [OK]
Wonder Dog (J) [OK]
Final Fight CD (U) Invincibility and Infinite Time [OK]
Final Fight CD (J) Invincibility and Infinite Time [OK] (Could you tell me which hex string to modify for invincibility?) <- (Forget it, I found the hex string comparing the original iso with patched one.)
Mickey Mania (U)
Infinite Lives And Invulnerability only works on 1st part of Steamboat Willie so I wonder if this could be happening to Mickey Mania (E).
I don't want to bother you, I know you have other games in mind but did you take a look at Corpse Killer?
Thank youLast edited by keeper7; 12-18-2010, 03:27:42 PM.Comment
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Sorry it took me so long to reply, I've been experiencing some hardware pc problems.
Hopefully tomorrow I can get back to hackin' some Sega CD!
First off, thanks for taking interest, and sorry my ISO's are different than yours.
Thanks for takin' the time to post your results, I'm sure it will help someone else out there.
To properly label the regions of the 140 games I have, I decided to make this site:
https://sites.google.com/site/SegaMegaCdPatches/all
As I find out the region, and make a patch for the game in question, I'll then upload the patches there, and still here.
At least finding the region is easy for this system, since the BIOS says Mega CD for (E), Sega CD for (U), and Japanese text for (J) >.>.
Thanks for the Mickey info, I'll have to sit down and actually play it for more than 2 minutes lol.
Some games have the hex string multiple times, and I wondered if those weren't for different stages/levels.
Your not bothering me lol.
I did indeed look into Corpse Killer a few days back.
I have both the CD version and the 32xCD version, neither seemed to accept any button input?Comment
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Eternal Champions
Infinite Time
---------------------------------------------Code:0181013b40
First instance, unless otherwise noted:
5 in 1 Sega Arcade Classics
Golden Axe
Almost Invincibility
Code:6404422A000208E8
Last edited by Mezmorize; 12-19-2010, 12:33:13 AM.Comment
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ECCO
Invincibility To Hits (But Not Loss Of Air)
Infinite AirCode:15916900242e
InvulnerabilityCode:0C7900E0
-------------------------------------------------------Code:4a3900084b8f666c02
Flashback
Invulnerability
-------------------------------------------------------Code:4a390000b1d667
Last edited by Mezmorize; 12-19-2010, 04:49:06 AM.Comment
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Ecco (The Dolphin 2) - The Tides of Time
Invincibility
InvulnerabilityCode:157C0028009C58
2nd Instance
Infinite AirCode:6046302A
------------------------------------------------Code:0C6A00E00044
Star Wars - Rebel Assault
Infinite Damage (EDIT: Only works on the first stage it seems...)
Edit:Code:0253554a79
Infinite Lives
Code:6100e0464a1266
Last edited by Mezmorize; 12-19-2010, 11:33:25 PM.Comment
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Jaguar XJ220
Parts Are Free (If You Have Enough Money To Purchase Them)
-------------------------------------------------------------------------------Code:42716000610011
Smurfs
Infinite Time
InvincibilityCode:67284EB9
Invulnerability (Had a choice between a blinkin' and non blinkin' code, I'll have to check for that more often now...)Code:4A390008ACE06604
Had trouble with a lives code, could get the RAM code easy though...Code:0839000400081C1B6632
By the way, WinRAR will also show the CRC32 of your ISO/BIN file...
And, let me know if there is another game you would like me to target sooner rather than later.
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Hook
Infinite TIme
Invulnerability (To Foes)Code:2c4a390005d7
Invulnerability (To Spikes)Code:4e7548e700c041
InvincibilityCode:600001300c05
Infinite LivesCode:663870114e
------------------------------Code:50f90005e2
Frankenstein
Invincibility (From Electric Eels)
4th Instance
Invincibility (From Acid)Code:48E7FFFE3C3C001E3E3CFFFF
5th Instance
Infinite LivesCode:48e7fffe3c3c001e3e
------------------------------Code:3D7C006001CA6000000E3D
Last edited by Mezmorize; 12-21-2010, 12:20:16 AM.Comment
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AD&D Eye of the Beholder
This code is for the character that will be located in the top left.
Infinite HP (Top Left Character)
Edit:Code:154200E40C
Nevermind, it seems to work for all 4 characters.
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Afterburner III
Infinite Planes
1st of 3 Instances
-----------------------------------------------------------------Code:47fa00304e
Last edited by Mezmorize; 12-21-2010, 02:43:15 AM.Comment
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Mezmorize,
here's the hex string you said you forgot to write down. (Maybe anyone will need to manually patch.)
Final Fight (Invulnerability) (1st Instance)
4E75536B0018
Batman Returns
Infinite Missile (1st Instance)
33FC0006
Infinite Time (1st Instance) (There is a problem with this one. If you accelerate your car the time will start to count down too.)
2A53680002Comment
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Thanks for the update!
So lets see; I need to look into Mickey, Batman (and possibly Frankenstein for more Infinite Health codes).
I really appreciate you testing the codes out and stuff, I hardly can find the time to hack 'em some nights, much less play them for a long time.
Well, off to work...Comment
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