Sonic 3 - Codes

[retrogamer]

I just got the PAL Asian Version of the game..The Code that Tony gave me EAAT-BL1T wont work on the Asian one..But AABT-AN3W does work on it, How odd..I thought the Asian one is like the Eroupe Version

[retrogamer]

Is anyone good at Hex-Coding..I'm trying to convert EAAT-BL1T for PAL Sonic 3 to a PAR code & AABT-AN3W for the Asian Version..

I have

EAAT-BL1T - Hex Code 0001F0: 5520..I put in my PAR FF01F0 - 05520...Did I do it right

[Tony H]

Try this:

0001F0 - 05520

or

00033-26600

Tony.

[retrogamer]

it seem's 0001F0 - 05520 does work, You could keep the switch up before you press start...

[Tony H]

Actually, I made a typo...

Was:

0001F0 - 05520

Should be:

0001F-05520

But I'm guessing you figured that out. Anyways, glad to hear it worked.

For anyone interested:

Here are some notes I made to myself awhile back about the Sonic 3 (E) Regional Bypass code...

----------------------

Sonic 3 (E) PAL....

Here's one I made for Sonic 3 (E) to let you play the
PAL (E) version on a USA Genesis machine...

AABT-AN3W = $0332:6600

Disassembled:

00000326 41F9 000001F0 LEA $000001F0,A0
0000032C 323C 000F MOVE.W #$000F,D1
00000330 B010 CMP.B (A0),D0
00000332 6700 0366 BEQ $0000069A(pc)

Something interesting here, in the first line of
assembly, you see this: $000001F0. $1F0 is the ROM
address for the region ("E" in this case). I'm going to
have the person that requested the code test this code
to see if it works on a real cart: $01F0:5520. All it
does is change the "E" to "U" (Europe/PAL to USA/NTSC).
Hopefully I'll remember to enter the results here. The
code works with an emulator, but that doesn't
necessarily mean it will work on a real console.
Update: He just emailed me and said that the $01F0:5520
code worked on his Genesis console (and the other code
worked too).

----------------------

Retrogamer is the second person to confirm that the code works on a real console. I've tried using that type of code (were you just change the region "letter") in other games without success. If I remember correctly, there were only 2 or 3 other games that it worked on. On all the other games, I had to kill the "Regional Check" routine.

Tony.

[James0x57]

That's outstanding! Great Job!!

[retrogamer]

Is that code you said Sonic 3(u) - Does that code work if you put in the Genesis version of Sonic 3 on a Japanese Mega Drive..I have to test it

Edit: I been messing with the PAL By-pass code, No luck..I keep on changing the 05520 to like 09620..I always get Developed for use only with Systems.Some effects has the Genesis Font deleted

[Tony H]

Theoretically, that code will let you play any version (any region) of Sonic 3 on any Genesis or Mega Drive just by changing the first byte of the value part of the code (0001F0:xx20). All Genesis / MD ROMs use $0001F0 as the address for region ID, and Sonic 3 is no exception. All you have to do is insert the ASCII hex equivalent for the region you want. U (USA) = 55, E (Europe) = 45, J (Japan) = 4A.

It's been awhile since I played around with this stuff, but if I remember correctly, that type of regional bypass code ($0001F0:xx20) worked on most (or all?) games on Gens emulator, but does NOT mean it will work on real consoles. I'm guessing this is because some emulators use the $00001F0 ROM address to determine the region of the ROM, and consoles may not. But that's just a guess. One of these days I'll do some testing on my Genesis. That would be cool to have one "universal" regional bypass code for all games, but so far, that doesn't appear to be the case.

Tony.

Edit: Retrogamer, to get the US version of sonic 3 to play on a Japanese MD, you'd want the console to think it's a Japanese cart, so your code would be: 0001F-04A20.

[retrogamer]

So the By-Pass code for Sonic 3 is Close for the US game to the PAL one..Can you see about some Japanese Codes for

Street Fighter 2 Plus CE
Super Street Fighter 2
Streets of Rage 3
Streets of Rage 2
Mega Turrican
Earthworm Jim
Mortal Kombat 3(PAL)
Ultimate MK3(PAL)

Thanks Very Much Tony

[retrogamer]

Tony..the 0001F - 05520 Code won't work with the games..I'm the US Verions if the PAR code for the games I listed..The only reason I said he Japanses Games, I thought it would be simple

Edit: I downloaded the Hex Editer & loaded Street Fighter 2 SCE (U), I got alot of Stuff at the begenning..like Sega, Street Fighter 2 Plus & SCE Text...Can you delete the last post after thsi..I made a Mistake..

[retrogamer]

I opened the Street Fighter 2 SCE in the Hex Editer..Where should I look

....SEGA GENESIS (C)T-12 1993.SEPSTREET FIGHTER.U' PLUS CHAMPION EDITION STREET FIGHTER.U'SPECIAL CHAMPION EDITION GM T-12016,0.0..J6 ...../.......... U [email protected]/.n..B.U......|m~.Q.......:{.._.UJ8..g..8....g..... ........Nu.8....g..8....g.............Nua.`.a..<.. NCJ8..f.NuBx..B8..B8..B8..a.+|@.....p.*."<P... <./..`..zA...C...0<..~.

[Tony H]

I think we're getting our wires crossed here, so lets start over... Which console are you using? A USA Genesis, a Japanese MD, or something else? Above you mentioned a Japanese MD, but in your email, you said you wanted codes to play Japanese games on a different system.

I'm going to give you 2 codes below. I have no idea if they will work on your games. My best guess is that they will probably NOT work on most (or all) of your games, but there's a slight chance that they will. If they don't work, then that means I will have to make a new code for each game. If that's the case, then it will be awhile before I get time to make them.

Here are the codes...

The first code is the same one I gave you before. This code will ONLY work if you are trying to play non US games on a US Genesis console. 0001F - 05520

Here is the second code. This code will ONLY work if you are trying to play non Japanese games on a Japanese Megadrive. 0001F-04A20

Remember, these probably won't work, but they're worth trying. Let me know if they work or not.

Tony.

[retrogamer]

Ok, I must be a Noob at this..But the Codes to play US games on the Japanses MD work..Except

Mega Turrican
Gunstar Hereos
Streets of Rage 2
Streets of Rage 3
TMNT Hyperstone Heist

I think the Sega Games need a differnt Code..But Mega Turrican isn't a Sega Game

[Tony H]

Well, that's good news. My "universal" regional bypass code works on more games than I thought.

Like I said, I'll have to make new codes for the rest of them.

Tony.

[retrogamer]

Tony..How can one code work with like few games, Is the by-pass code in the same area of th ROM...btw I was using the Game Genie EAAT-AY1T