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1 user currently in Rom Hacking:  hukka |
| Acmlm's Board - I2 Archive - Rom Hacking - Really interested in building SNES carts ... could use some help / tips |
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Xeolord - B l u e s - Power Metal > All Level: 81  Posts: 3402/3418 EXP: 4884196 For next: 108653 Since: 03-15-04 From: Yeah Since last post: 15 hours Last activity: 15 hours |
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| So, now that it's been awhile with my job, and I've got a good amount of money, I think I could afford a lot of the requirenments that are needed to build an SNES game, by putting a rom image over it, and so forth. I'm just basically really interested in building cartridges of some rare, and unreleased titles like Seiken Densetsu 3, Tales of Phantasia, and so on. The thing is, I am pretty much entirely clueless as to where to even start. All I can really say is that I've got an NTSC system, and would probably be making them out of NTSC (US) carts. So, is there anyone here willing enough to help me out?  ... |
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Sukasa Boomboom Error 349857348734534: The system experienced an error. Level: 57  Posts: 1981/1981 EXP: 1446921 For next: 39007 Since: 02-06-05 From: *Shrug* Since last post: 6 days Last activity: 1 day |
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| Not really, but I can point you to Cherryroms, I read that they're supposed to be able to help you in their hardware forum, or something similar to that. Not too helpful, but it's a step in the right direction. |
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HyperLamer <||bass> and this was the soloution i thought of that was guarinteed to piss off the greatest amount of people Sesshomaru Tamaranian Level: 118 Posts: 8033/8210 EXP: 18171887 For next: 211027 Since: 03-15-04 From: Canada, w00t! LOL FAD Since last post: 2 hours Last activity: 2 hours |
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| The easiest method is to get a cart that has whatever hardware your game uses (eg for a Mario Kart hack, use a DSP-1 cart, preferrably a Mario Kart cart), remove the ROM chip and put a flash ROM/EEPROM in its place. Problem is you need to figure out the pinout of the original chip, and wire up the new one to match it, which can be tricky. Also, you need a way to write your new ROM onto the chip; most people choose to simply use a socket and cut a hole in the case so they can pull the chip right out and stick it in a writer, but depending how your cart is set up, you may be able to adapt a spare SNES to be one that writes the chip in-cart. Or, you could simply add a parallel port wired to the chip's address and data lines, with some simple circuitry, so that you could flash the chip in-cart through your parallel port. You'd most likely need to write your own software though. If you can't get that figured out, you may find it easier to buy a simple breadboard (like a circuit board, but no traces, and full of holes to stick components in) and make a cart from scratch. If you do this I suggest you cut the bottom part of the original cart's mainboard off and put it in yours, that way you don't need to make the connector. This becomes more difficult as you add more stuff - with a ROM-only game, it's generally pretty easy, but ROM-only SNES games are uncommon (most have a bit of SRAM, and a lot of SNES games use expansion chips). If your cart is designed that it can write to its own 'ROM', one method you may enjoy is making it a multicart. The first program, which would start at bootup, would be a combination menu/updater - it selects the game, and can download a new ROM from the PC (how you connect the SNES to the PC is up to you) and write it onto the cart. This way, you need not build/buy a writer; you can simply borrow one (or in some cases, use an existing one - try using the BIOS chip off an old motherboard; you can use a BIOS flash utility to write your loader program to the chip, so long as the chip currently contains a working BIOS for the board). Then once your program is in place, you can flash using the SNES itself, and not have to disassemble the cart or build a writer (unless, of course, your program fails or becomes corrupt). Finally, keep in mind two key points: 1) Your cart need not look fancy or authentic; it need only do its job. If you plan to modify the cart a lot, you may be better off having the main board outside of the cart itself, bare, with only wires inside the cart connecting the board to the SNES. It won't look pretty, but it'll make things easier. 2) You're only limited by what the console can do and what you can do. SNES is great for expansion chips, and you need not stick to the ones used in commercial games. You can build an Athlon XP 3000+, MP3 player, toaster, or whatever the hell you want into the cart, so long as you're capable of it. (Of course, you'll need to add support to any emulators you intend to use.  ) Just keep in mind the SNES's limitations (and cooling if you're going with those wacky ideas  ), and go nuts! |
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Xeolord - B l u e s - Power Metal > All Level: 81 Posts: 3410/3418 EXP: 4884196 For next: 108653 Since: 03-15-04 From: Yeah Since last post: 15 hours Last activity: 15 hours |
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| Hmmm, I really confused myself here ... I mainly meant to ask, how I would go about putting a rom into a cartridge. Not really build one from scratch, but just putting a rom unto a cartridge if I could. Don't know if that makes any difference to the situation here or not, but yeah. Edit: If someone wants to edit this thread title, go ahead. Very misleading, sorry about that. ... (edited by Xeolord on 10-27-05 10:25 PM) |
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Omega45889 Panser Level: 30  Posts: 335/335 EXP: 148978 For next: 16891 Since: 03-22-04 From: Vancouver Canada Since last post: 5 days Last activity: 6 hours |
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| I know exactly how to do it, and i have modified my cart and all, but my eeprom programmer cant seem to program it without errors. Oh well, maybe ill have to buy another one. | |||
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HyperLamer <||bass> and this was the soloution i thought of that was guarinteed to piss off the greatest amount of people Sesshomaru Tamaranian Level: 118 Posts: 8077/8210 EXP: 18171887 For next: 211027 Since: 03-15-04 From: Canada, w00t! LOL FAD Since last post: 2 hours Last activity: 2 hours |
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Originally posted by Xeolord Like I said, open cart, remove ROM, insert rewriteable pseudo-ROM. Basic soldering really; the trick is mapping the pins correctly (and in some cases, working with FRICKIN SMALL components, not usually on SNES though). |
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FloBo Koopa Level: 17  Posts: 97/101 EXP: 20723 For next: 4020 Since: 09-11-04 Since last post: 3 days Last activity: 13 hours |
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| Perhaps this site helps you a bit: http://snesdev.romhack.de/ There are various different tutorials on this site showing how to build your own Secret of Mana 2-cart / Starfox 2 / etc... Really neat!!! |
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HyperLamer <||bass> and this was the soloution i thought of that was guarinteed to piss off the greatest amount of people Sesshomaru Tamaranian Level: 118 Posts: 8079/8210 EXP: 18171887 For next: 211027 Since: 03-15-04 From: Canada, w00t! LOL FAD Since last post: 2 hours Last activity: 2 hours |
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| Haha, brilliant. Their copyright and logo crap ruins a bunch of the diagrams. |
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FloBo Koopa Level: 17 Posts: 99/101 EXP: 20723 For next: 4020 Since: 09-11-04 Since last post: 3 days Last activity: 13 hours |
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| wtf...?! | |||
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Jagasian Newcomer Level: 3 Posts: 4/4 EXP: 79 For next: 49 Since: 07-27-05 Since last post: 4 days Last activity: 3 hours |
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| Just get the Super Flash 64M Cart from Tototek. Here is the seller: http://tototek.com/ Here is a detailed page about the kit: http://www.tototek.com/pio/main1/SUBMENU/PARTS/LINKS/OS/superflash.htm It lets you write ROMs to the cart via a parallel port and a special circuit board that comes with the kit. The cart circuit board itself can be placed inside any SNES or SFC cart shell. Since it uses flash RAM chips, you can rewrite games over and over again. Also, the programmer board can be used to dump carts and save games to your PC. |
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FloBo Koopa Level: 17 Posts: 101/101 EXP: 20723 For next: 4020 Since: 09-11-04 Since last post: 3 days Last activity: 13 hours |
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| ugh... that's right... just forgot I also own this neat little thing^^ Jeah, and if you decide to order one of those babys, be sure to visit http://www.digisalt.de to grab the ultimate Super Flash-label made by Mr. FloBo himself^^ Yeah!!! I'm a Koopa now!!! (edited by FloBo on 10-29-05 01:59 PM) |
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Xeolord - B l u e s - Power Metal > All Level: 81 Posts: 3412/3418 EXP: 4884196 For next: 108653 Since: 03-15-04 From: Yeah Since last post: 15 hours Last activity: 15 hours |
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Originally posted by Jagasian Simply put, that's freaking sweet. Kind of the easy way out, but hey, that really helps. I'll probably get one and try it out here within the week or so. I'll let you guys know how it goes.  Thanks a lot.  |
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| Acmlm's Board - I2 Archive - Rom Hacking - Really interested in building SNES carts ... could use some help / tips |
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