I dont understand what this means...

[sonicfoot]

What the heck is the difference between the folowing set of roms? Could anyone explain what all the Gobbaldigook thats in brackets after each romset means?

The King of Fighters 2002 [Encrypted C, Decrpted V]
The King of Fighters 2002 [Fully Decrypted]

Rage Of The Dragon [Decrypted C & V]
Rage Of The Dragon [Original Set]

Metal Slug 4 [Original Set]
Metal Slug 4 [Decryted C & V]

Matrimelee [Not Encrypted P, Decryted C]

[Kazuya_UK]

There's many different sets floating around for varying reasons. After SNK started putting encryption on carts (KOF 99 being first), they encrypted them in various ways. First off, there are carts that have encrypted graphics roms (C roms), then theres carts with encrypted program roms (P roms), then there are carts that have both I think. This encryption was figured out some time ago, so the newer emus can now run the encrypted versions of the roms no probs.

To further complicate matters, there are romsets floating around that are already decrypted. Most of them probably came from encrypted carts, but they have been predecrypted for one of two reasons usually:

1. To try to make it work in NeorageX. NRX doesn't support encrpyted roms, so the only way to get it to work is to give the emu a set of already decrypted roms.

2. To speed up loading times on slower computers. Decrypting the roms on the fly (like Kawaks/MAME/Nebula do) takes up extra memory and can slow down loading times, so people with slower computers find that loading non encrypted roms is easier. There is actually an option in Kawaks to make a set of decrypted C roms if you already have the encrypted set (meaning you wouldn't have to download it again).

I think some games also have sound roms (V/M roms) that are encrypted. Anyways, I hope that clears things up a little, if you need any more info then let me know

Kaz

[sonicfoot]

So there really isnt any difference with the actual gameplay then?
What about the different sets that you can download? e.g MOTW has Prototype,( I can guess what that means), but there is also Set 1 and 2

[seiryu]

It's just basicly different released versions on different dates.
Some have some adjustment in the data, no changes in the gameplay.

You can see that clearly in the capcom streetfighters games....remember that when you start the game,you see this
[glow=red,2,300]streetfighter 2
930911
US[/glow]
Well, that's the releasedate of the version 1993,november the 9th.
Same goes for neogeo games but you don't see this on the startup of a neo game.

[darkschneider]

The prototypes are just slightly different from their real counterparts.

The MOTW prototype has Grant and Kain selectable without a code

The KOF99 prototype has absolutely no difference that I can tell. NOTE: the KOF99 prototype rom set does NOT come with V (sound) roms, so it will all be silent...

Also, I believe decrypted roms will take up less space on your HDD. Strikers1945, KOF2000 encrypted, and KOF99 encrypted, are all large 70-80 MB rom sets, but if you find the decrypted versions, they are ~40 MB.