[Phoebius]

Hi,

So, I was wondering... I recently bought some cartmodding tools to make my own Megadrive and Snes games, and I really wanted to make a real copy of Sonic Crackers.
It worked, it's nice and all, but as said on the wiki, the game crashes at the SEGA screen (if I don't pass it with start), or at random locations.

Is there a Sonic Crackers hack to fix these issues? And has someone ever worked on a hack to make the proto more playable, like Chaotix?

Thanks

[MarkeyJester]

If you have a hexadecimal editor available, open the ROM. Go to offset 000412, replace 50 00 with 4F D6. Then go to offset 004FD6, replace 10 00 67 33 8B 00 00 31 8B C9 70 23 40 00 00 00 23 00 00 72 32 D8 E5 E4 00 40 48 02 00 23 00 00 23 00 00 13 00 00 4E 10 00 67 with 4E B9 00 00 51 8A 70 02 72 FF 51 C9 FF FE 51 C8 FF FA 10 3C 00 82 4E B8 64 02 32 3C 40 00 51 C9 FF FE 10 3C 00 E1 4E B8 64 02. Finally, go to offset 006432, and replace 4E B9 00 00 51 8A with 4E 71 4E 71 4E 71. That will prevent the ROM from crashing on hardware.

[Phoebius]

Ok thanks, I'll do that next time I flash the rom!

[Dark Sonic]

Since that was solved, I have a question about flash roms. What are they, how do they work, and where can I get one, because I would love to put Sonic 3 Complete on a cartridge and play it on my Genesis.

[Tanks]

We should really have a pinned Flashcart topic since developments seem to come out of the blue...

[Overlord]

Everdrive is what you want, see a feature list here: http://krikzz.com/

However I couldn't tell you which of the two on that page is the better one, my flashcart is an older Tototek that I've not seen an immediate need to replace. http://atariage.com/...28#entry2498499 may be of some help.

[Aerosol]

Everdrive is for if you want a multi-cart.

Get yourself a repro if you it to feel a bit more genuine.

[iGamr]

It's insane how much they charge for flash carts...

[Overlord]

Not really, they'll pay for themselves after a few ROMs. Especially rarer ones.

[Phoebius]

Dark Sonic, on 14 March 2014 - 11:14 AM, said:

Since that was solved

Well, it's not quite solved, I still want to know if someone is willing to make a hack based on Sonic Crackers to make it more playable / like a real game.

[JojHeywood]

Sonic Classic Heroes implemented Sonic Crackers/Knuckles Chaotix gameplay not too long ago if that tickles your fancy.

This post has been edited by JojHeywood: 15 March 2014 - 01:04 PM

[Felik]

Phoebius, on 15 March 2014 - 12:43 PM, said:

Dark Sonic, on 14 March 2014 - 11:14 AM, said:

Since that was solved

Well, it's not quite solved, I still want to know if someone is willing to make a hack based on Sonic Crackers to make it more playable / like a real game.

Dude it only has 2 stages. If anything it'd be reasonable to use it's graphics for a level in some hack or fangame.

[Phoebius]

Felik, on 17 March 2014 - 01:51 AM, said:

Phoebius, on 15 March 2014 - 12:43 PM, said:

Dark Sonic, on 14 March 2014 - 11:14 AM, said:

Since that was solved

Well, it's not quite solved, I still want to know if someone is willing to make a hack based on Sonic Crackers to make it more playable / like a real game.

Dude it only has 2 stages. If anything it'd be reasonable to use it's graphics for a level in some hack or fangame.

A lot of fan hack only have two stages in their first (and generally final) version.

It would be interesting to make some levels with modified tiles from Chaotix, for example. Like if they took the direction to make the Chaotix game a true Sonic sequel on genesis instead of a spin-of.
I'm curious of the lack of "hacking interest" for this prototype (compared to Sonic 2 alpha/beta, for example)

Plus, I'd be curious to know how the map screen could be used/modified.

[ICEknight]

Phoebius, on 17 March 2014 - 03:41 AM, said:

Plus, I'd be curious to know how the map screen could be used/modified.

Speaking of, has anybody looked for any unused functionality in there, such as jumping or collision detection?

I remember finding an unused flashing palette in the "electric" field back in the Genecyst days, but I haven't seen it documented anywhere yet, so there might be more stuff in there still waiting to be discovered.

[Phoebius]

MarkeyJester, on 13 March 2014 - 01:40 PM, said:

If you have a hexadecimal editor available, open the ROM. Go to offset 000412, replace 50 00 with 4F D6. Then go to offset 004FD6, replace 10 00 67 33 8B 00 00 31 8B C9 70 23 40 00 00 00 23 00 00 72 32 D8 E5 E4 00 40 48 02 00 23 00 00 23 00 00 13 00 00 4E 10 00 67 with 4E B9 00 00 51 8A 70 02 72 FF 51 C9 FF FE 51 C8 FF FA 10 3C 00 82 4E B8 64 02 32 3C 40 00 51 C9 FF FE 10 3C 00 E1 4E B8 64 02. Finally, go to offset 006432, and replace 4E B9 00 00 51 8A with 4E 71 4E 71 4E 71. That will prevent the ROM from crashing on hardware.

So, sorry for the bump, but it didn't really work.
I tried to edit the rom, it was still working on Gens. Then I flashed on a cartridge...

The game doesn't freeze anymore on the Sega screen, but after pushing start on the title screen, the game kinda freezes on a blue screen with Techno Tower music, then eventually crashes.
Is there something I could have done wrong? My hardware is a european Megadrive, but switched, so I tried in 50/60 Hz, and US/Jap.

Thanks in advance...