[Rika Chou]

http://forums.sonic-cult.net/index.php?sho...ndpost&p=258870

[Weird Person]

I can't view SCARZ board, what is in the topic?

[Rika Chou]

rika_chou, on Jul 28 2005, 10:03 PM, said:

Overlord, on Jul 28 2005, 01:39 PM, said:

A post was made long ago, on some Sonic board, I forget which. It identifies a way of telling which revision your cart is by using a Game Genie - I assume locked on to S2&K.

Quote

GNBT-BARN: rev. 00
GNBT-BAR4: rev. 01
GNBT-BASJ: rev. 02

The code that triggers the "NO WAY!" screen identifies your cartridge revision. For example, if you input GNBT-BAR4, and the "NO WAY!" screen comes up, your cart is a rev. 01. The game should start normally with the other two codes.

Let's find those other two revisions!

BING0!

I did this, three out of four carts were rev 01, the other is.........Rev 00!

I tested it a few times to make sure I did the code right,

I should be receiving a cord from MoD within the next few days, and I will dump this sucker!

This post has been edited by Rika Chou: 29 July 2005 - 01:18 AM

[Tweaker]

Um, are there pigs?

I didn't see that post. Are you sure we didn't have 00 all along?

[Rika Chou]

No pigs. This ROM is not dumped yet, just check the header. All we have is Rev. 01. (and presumingly Rev. 02 from Sonic Compilation)

[Tweaker]

I wonder if this will be another case of byte identical dumps? :P

[Rika Chou]

Nope. The header, at the least, will be different. :P

[Elusive]

My version's revision 01. =(

So has this cart always been yours, Rika? Bought on launch day? Stolen from Naka himself? =P

[Qjimbo]

Wow that's pretty cool! Does the cart have a different serial on the label? Or are those meaningless?

[ICEknight]

Something kinda unlelated...


I've noticed how many of you guys use the term "rev. something" for the version number. Well, it was only used by GoodGen in the old days so I guess there's no need to use it anymore.

[LocalH]

No, we're calling it that, because that's pretty much what it is:

Quote

6:  Product code and Version number:
  * The first 7 characters are the product code
  * The 2 characters after the hiphen is the version number. This will
  vary depending on the the type of ROM or software version

[Ben2k9]

cool, however im not being optimistic that anything but the header will be different.

[Rika Chou]

It cannot be to much different, as it is able to lock onto S&K.

[Tweaker]

Well I'm sure when the lock on technology was made, they had all revisions of Sonic 2 in mind. Besides that, the ROM would have to be shifted to not work, according to drx.

[LocalH]

I imagine that any differences will be in the program code only.

I don't know if KiS2 uses hardcoded absolute offsets for Sonic 2, or if it changes based on the GM code. Since the UPMEM is only 256K, I can't imagine that there's that much room to account for art in different places.

Perhaps that's a reason Sonic 1 wasn't compatible with S&K - I'm pretty sure that the two revisions have stuff moved around quite a bit.