Secret of Mana Prototype

@Sinrevi:

The second scan have the light of the flash on the village. Can you retake some better pictures please? of the mag.

Some comparaisons between Sinrevi Scan and the final Retail:

 

This better?

 

@Sinrevi:

Better can I have high res. scan please?

All these mag scanned are the same pictures of the Final release.





Is the proto on this picture http://img15.hostingpics.net/pics/122251SecretofManaproto.jpg

was http://www.digitpress.com/forum/showthread.php?63295-Secret-of-Mana-Prototype

or EGM mag scanned?

nb. between the final retail and mag scans there are not differences.

 

Scan the ROM using NSRT.

http://www.romhacking.net/utilities/400/

In all likelihood, the game is identical to final.

 

Hello,

I don't have the cart yet.
It's in the shipment.

http://www.digitpress.com/forum/showthread.php?63295-Secret-of-Mana-Prototype

Apparently it's not my SoM prototype. for SURE.

 

There's another Secret of Mana "prototype" that I have a picture of. However, it has a production PCB on it, so it really isn't a prototype. I'm betting that thread is about that one.

 

Show me the picture please.

Hello,

I just receive my proto.

I have dumped all 4 eproms.

Here is the pictures:





Who want help me to fix the game please?

nb. I have a black screen.

Rom Information:



Comparaison between Secret of Mana (proto) , jap version and US version :

 

standard usa version.

 

Unfortunately, doing an MD5 check on a corrupt cartridge will always give you a non-matching MD5 - after all, that's exactly what you use MD5 for, to do a high-level comparison. However, the CRC doesn't seem to match the US standard version I found ( which was D0176B24 ) .

Karsten: Any clue as to what makes you think that?

 

Most likely the size being the same.

 

Ah. Good point

 

Still, size being the same on a cart doesn't mean quite as much, especially if the roms are full

 

We don't sure it's a standar usa version.
Who can help me to repair in hex the prototype?

thanks in advance

 

The internal header checksums in the screenshot you posted are the same as USA retail version (51FC AE03) It's almost certainly the final build.

edit: if it's the same, the quickest way to locate and confirm the corrupt bytes is a file comparison utility that lists the hex offsets of the bytes that are different. Maybe someone reading this knows a simple program to recommend. I seem to recall Evan had screenshots in his SNES Central prototype articles of a program that makes a list (ex: 0xABCD - 1 byte different at location.)

 

As I have mentioned before, you should use NSRT, which is specially made for scanning SNES roms.

nsrt -fc rom1.sfc rom2.sfc > diff.txt

Using that command will give you a nice list of the corrupted bytes.

Edit, here is the NSRT output of the final US Secret of Mana. As you can see, the checksum in the header is the same as in the prototype.

 

I have this diff.txt

Comparing files egm.sfc and us.smc:
0000547B: 00 EA
000084F1: 00 38
00010AF2: 00 5B
00013C01: 00 28
0001C089: 04 05
00027823: 00 9D
00029852: 04 94
0002A654: 02 03
00030E70: 00 12
00032EDD: 04 D5
00036C97: 00 B9
0003C08A: 00 8A
0003E489: 00 8A
000408E0: 00 9A
00049C67: 00 CA
00049C68: 00 88
00049C69: 00 C3
00054CA9: 02 CB
0005B83B: 00 01
0005E042: 04 1E
000608FA: 04 FF
00060A00: 00 12
0006C097: 04 25
0006C098: 00 C5
000776E6: 00 20
00079625: 00 C2
End of both files.

Prototype fixed with hex editor.

Here are the pictures:

 

that and checksum.

still there a 0.0001% out of 99.9999% it mitght be different in some ways

 

Here is the real prototype checksum:

 

You listed diff file suggests that bits were programmed or bit rotted. The internal checksum suggests this is identical to the retail version. While it is possible it is not, it is not very likely. The SNES uses a simple checksum and not a CRC or more complicated hashing method. Most likely this cartridge contained the final retail version and was sent to a party like a publication for review/preview purposes.

 

Hello,

Who have the email of monkeychemist please? on digitpress forum.
I need to contact him.

thanks.