GAME SHARK IN EMULATOR ROMS, IT'S POSSIBLE!!!

cristfc · Post by **cristfc** » Tue Nov 18, 2003 12:57 pm

Understand I am Brazilian, don't speak (and whrite) english very well!!!

I and my brother Luciano discovered this cheats together!
In Sms Plus (New version):

[address which you changed in rom file] + [25E124] = Gameshark code for Sms Plus(DC)!
Don't understand?

The ROM (which you loaded) start in address 25E124, this point is = 0000 in ROM understand?
For get gameshark code for this emulator, open some ROM using an hexadecimal editor (in PC or MAC) and change any byte in ROM, eg. you change byte for "1C" in sonic2.sms ROM, address 000023C3 and exit and save. Loading game in master system emulator for PC you see one cool thing happened in game(jump higher, invencibility or other thing, it is an example only!)
How convert this to Gameshark for Dreamcast?
With scientific calculator in hexadecimal mode make this: 23C3 (addres you changed) + 25E124 (ROM START for the Sms plus-New version in this site) = 2604E7
Now in Gameshark enter code:
0025E124
0000001C (byte change executed in example)

It's simple!

25E124 in dreamcast (smsplus) is address 23C3 in rom file, the difference is why dreamcast loaded more things into your memory: the Rom file, the emulator file and other files!!!

In DC Generator (Newest version)

Is only:
[address which you changed in rom file] + [1597A0] = Gameshark code for Dc generator!

More emulators Gameshark conversions is coming....

WHERE IS ROM (LOADED) ADDRES AND RAM IN SMEG v0.84 (OR OTHERS EMULATORS) FOR I CHANGE IS USING GAME SHARK CODES???
If you discovery send private message for me!
Thanks!!!

Moi · Post by **Moi** » Thu Nov 20, 2003 1:45 pm

Interesting...
Have you tested this on any rom?

cristfc · Post by **cristfc** » Fri Nov 21, 2003 12:19 pm

Yes! In Pc Use Hex editor, change 1 byte, make conversion and see...is true!!!

Moi · Post by **Moi** » Fri Nov 21, 2003 9:05 pm

So what roms have you already hacked?

cristfc · Post by **cristfc** » Mon Nov 24, 2003 12:03 pm

I ? SONIC 1, SONIC 2 and SONIC 3 all for Genesis!!! ( in http://shadowsoft.dyndns.org/ssrg see more info and sonic hacking guides!!!!!). My brother changed text "NOBODY GOES AGAINST THE MASTER" in strider.sms (master system)!!!
SONIC3 HACK work in SEGAGEN, SONIC 2 NOT WORK, I'LL TRY DISCOVERY YHE UNLOCK CODE!!!

Ian Micheal · Post by **Ian Micheal** » Mon Nov 24, 2003 3:14 pm

sonic 2 works fine on gensis plus by black aura.

cristfc · Post by **cristfc** » Wed Nov 26, 2003 2:11 pm

For arrive to SEGAGEN ROM start address:

I have tested codes for many days, I and my brother!
After see size SONIC2 genesis ROM, 1.048.576 bytes, I converted 1048576 in Hexadecimal value: 1048576 (dec)=100000 (hex), after this I put gameshark code 00100000 0001 in SEGAGEN and loaded SONIC2 ROM, when I see no effect, only add 100000HEX (size of SONIC2 ROM) to current Gameshark code (with objective to discover the ROM start address): 100000+100000=200000HEX, this metod I used until to arrive in C00000 (when the red screen not appear I know ROM not have changed, when appears I know ROM have changed (in address C00000!))

It was a difficult work but I win!!!!

It's cool!

OneThirty8 · Post by **OneThirty8** » Wed Nov 26, 2003 4:23 pm

We really shouldn't be talking about Segagen here.

Johnnylee_hang · Post by **Johnnylee_hang** » Tue Dec 16, 2003 7:57 pm

Wait it sounds funny. I haven't tried it, but answer this:

Does the emulator cristfc mention earlier have a gameshark or gamegenie inside the emulators or does he mean by using dc gameshark?

FETUS · Post by **FETUS** » Sat Dec 20, 2003 3:07 am

it would be interesting to figure out gameshark codes for homebrew games