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1 user currently in Rom Hacking:  hukka |
| Acmlm's Board - I2 Archive - Rom Hacking - FCEUXD W00t. |
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windwaker Ball and Chain Trooper WHY ALL THE MAYONNAISE HATE Level: 61  Posts: 565/1797 EXP: 1860597 For next: 15999 Since: 03-15-04 Since last post: 4 days Last activity: 6 days |
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Originally posted by HyperHacker Ctrl + C Ctrl + V You've successfully copied the file  . |
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Heian-794 Red Super Koopa Level: 44 Posts: 559/896 EXP: 611014 For next: 271 Since: 06-01-04 From: Kyoto, Japan Since last post: 21 days Last activity: 10 days |
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| Could someone do a big favor for a hapless n00b? I downloaded FCEU 0.98 and want to give it a try, but have no idea at all what to do. I mean, I've unzipped the file, but I get folders full of mysterious files with nothing clearly marked as the application I'm supposed to be running. The website: http://fceultra.sourceforge.net/docs/ is very little help at all and is full of arcane information that's beyond my ken. Somebody give me a quick and dirty way to get started with FCEU? |
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DahrkDaiz Red Super Koopa  Acmlm's Mosts 2005 Best ROM Hacker Level: 45  Posts: 408/885 EXP: 643520 For next: 16644 Since: 03-15-04 From: K-Town Since last post: 4 hours Last activity: 4 hours |
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Originally posted by HyperHacker Like Gavin said, in-line assembler is click a line of code, edit it, bam. It's in the ROM. As for editing the rom file, the changes are instant, but, it's on the emulator's copy of the rom, not the rom file in your hard disk. File->save will save the changes. And if you fry your rom and haven't saved it yet, you can undo it (ctrl+z) so you can fix the problem. Plus, any changed bytes are shown in red. You can also edit all of the registers. The CPU process register (NZCV flags etc), A, X, Y register, the current program counter, the PPU pointer. About the only thing you can't edit is the stack (and why would you want to?) The trace logger can also be saved to a file or read straight from the window. It can be updated in real time or updated only when the debugger snaps. You can control the amount of buffer the trace logger has for the window, choose whether or not it shows the register values (A, X, Y) and with the code/data logger, you can tell the trace logger to log only newly executed data. So if you're looking for level data, you could play every level but the one you're looking for and log the data/code. Then, have the trace logger log only newly logged data and play the level you're looking for data on. When the trace logger starts logging, it'll log the newly accessed data, i.e. the level data you were looking for. So don't be fooled, bbitmaster has thought of everything in this extended version of FCEUd  |
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Gavin Fuzzy Rhinoceruses don't play games. They fucking charge your ass. Level: 43  Posts: 335/799 EXP: 551711 For next: 13335 Since: 03-15-04 From: IL, USA Since last post: 13 hours Last activity: 13 hours |
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Originally posted by Heian-794 my only guess is that you are downloading the source instead of the pre-compiled binary file. this file from this page. (only directly linking so he gets the right file) try that, then the icon that looks like an NES |
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Kitten Yiffer Purple wand Furry moderator Vivent l'exp����¯�¿�½������©rience de signalisation d'amusement, ou bien ! Level: 135 Posts: 6564/11162 EXP: 28824106 For next: 510899 Since: 03-15-04 From: Sweden Since last post: 3 hours Last activity: 4 min. |
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| Well, but then tile-editing is far from the hardest thing to do in a hack anyway. And since your keeping the source open later on... Nice that the changes isn't instant. I was gonna expect doing a ton of backups, but small things like that is... nice. (i'm still gonna do a backup now and then thought XD)...I don't even have the latest version of FCEU.  |
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Hyde Goomba Level: 8 Posts: 6/24 EXP: 2168 For next: 19 Since: 11-27-04 Since last post: 209 days Last activity: 203 days |
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| Now here is something to look forward to... Keep it coming, bbit. | |||
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BMF98567 BLACK HAS BUILT A SILLY DICE-MAZE! GO! Current list of BURNING FURY >8( recipients: - Yiffy Kitten (x2) - Xkeeper Level: 53  Posts: 520/1261 EXP: 1094149 For next: 62970 Since: 03-15-04 From: Blobaria Special Move: Rising Meatloaf Backhand Combo Since last post: 21 hours Last activity: 1 hour |
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Originally posted by Rebecca DaiseYou mean the stack itself, or the stack pointer? Since the stack is part of RAM, I don't see why you couldn't edit it (though, as you said, it'd be kinda pointless)... |
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Heian-794 Red Super Koopa Level: 44 Posts: 560/896 EXP: 611014 For next: 271 Since: 06-01-04 From: Kyoto, Japan Since last post: 21 days Last activity: 10 days |
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| Thanks very much for the help, Gavin; I've downloaded it and it works perfectly. It even loads Bases Loaded 2, something NesterJ can't do! Unfortunately it doesn't display the active palette, so I'm stuck waiting for FCEUXD before I can hack this game! |
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Emptyeye Real American Level: 67 Posts: 1080/2273 EXP: 2488421 For next: 104451 Since: 05-24-04 From: I DUNNOOOOOOOO!! Since last post: 9 hours Last activity: 4 hours |
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| I wonder, can this possibly be used for non-traditional hacking purposes? What I mean is stomping out potential crippling bugs in games (I'm thinking specifically of the "Scuzz never falls down" glitch in Level 10 of Battletoads...looking at the code, figuring out what it is that causes him to not fall down, and editing it)...in all, if someone decided to go that route, this could be a very useful tool indeed beyond the more traditional hacking applications. Granting, you can do this anyway, but something like this seems like it would make it a whole lot easier. |
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Gavin Fuzzy Rhinoceruses don't play games. They fucking charge your ass. Level: 43 Posts: 339/799 EXP: 551711 For next: 13335 Since: 03-15-04 From: IL, USA Since last post: 13 hours Last activity: 13 hours |
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Originally posted by Emptyeye actually it certainly can. And FCEUXD has a special option that would be extremely helpful finding something like this, along with the normal breakpoint settings for the debugger, there is a very useful option to "Break on Bad Opcode". Now, normally a game should pretty much never be reading a Bad Opcode, it means that something bad happened to the game and the PC was thrown into oblivion, or a bank wasn't swapped at the correct time, or any other number of oddities that can make a game crash. i just recently used the bad opcode breakpoint in conjunction with the trace logger to find the code executed directly before the game crash. it's really amazing what this thing can do  |
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jman2050 Red Koopa Level: 19 Posts: 31/123 EXP: 33172 For next: 2605 Since: 03-21-04 Since last post: 10 days Last activity: 103 days |
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| I've said it before and I'll say it again... Do this for the SNES... I don't care how long it takes or how much time you actually spend on this, but do this for the SNES. Nevertheless, this'll come in handy when I start my next hacking project (a Megaman hack...) |
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bbitmaster Koopa Level: 18  Posts: 38/103 EXP: 25264 For next: 4633 Since: 03-28-04 From: Knoxville, tTN Since last post: 12 days Last activity: 7 days |
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Originally posted by jman2050 I have considered doing a snes debugger like this, and after looking over the source, I know it's certainly possible. I just haven't decided if I want to put forth the effort. There are just too many other things I'd like to do after I finish with this. |
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Someguy Buzzy Beetle It seems as though the girl you've fallen for is also a pyromaniac. Level: 32  Posts: 130/397 EXP: 193329 For next: 13113 Since: 03-15-04 From: I'm proud to be an American... I think... Since last post: 1 day Last activity: 5 hours |
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| I would of thought that GBA would be easiest to do it for because it seems so much is known about it and I think VBA is open source allready and many things about it are easy, even things like pointers which normally require adding 5040 and dividing by pi were made simple. However you probably won't do that but I don't care this will be great | |||
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ev0 Goomba Level: 9  Posts: 3/27 EXP: 2513 For next: 649 Since: 12-16-04 Since last post: 10 days Last activity: 7 days |
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| w00t congratulations xD |
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AWJ Newcomer Level: 3 Posts: 2/3 EXP: 94 For next: 34 Since: 12-03-04 Since last post: 308 days Last activity: 307 days |
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| One useful feature would be to see the current state of the mapper--which PRG and CHR banks are loaded at which addresses, which nametable mirroring mode is currently in use (for mappers like MMC1 and MMC3 that can change the mirroring with a register write), et cetera. Right now seeing which banks are currently loaded requires looking at the CPU address space in the debugger and comparing it with a copy of the ROM loaded in a hex editor. And the only way to find out what mirroring a game is using is to trap writes to the mapper register that controls it. The debugger in SNES9x has a "view hardware features used this frame" command which tells you at a glance what screen mode is being used, the locations in VRAM of the pattern tables and name/attribute tables for each layer, the scroll position of each layer, what each of the HDMA channels is doing, and such. Here's an example of its output: > w |
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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: 2491/8210 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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Alright, I'm convinced. Assuming it's not chock full of bugs (which I somehow doubt  ) this is gonna be the best debugger ever.What are the chances I could get a copy of the final source code and try to turn it into a GB/GBC emulator?  FCEUDXD4GBC, got a nice ring to it. (edited by HyperHacker on 12-17-04 01:08 PM) |
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dan Snap Dragon Level: 43  Posts: 280/782 EXP: 534516 For next: 30530 Since: 03-15-04 Since last post: 20 hours Last activity: 14 hours |
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Well, the original FCE Ultra is released under the GPL, so yes, it's safe to assume that the source code will be released. I do hope that turn it into a GB/GBC emulator was a joke, though.  |
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Jaspile Red Koopa Level: 20  Posts: 78/133 EXP: 37467 For next: 4972 Since: 03-15-04 From: Paris, France Since last post: 20 hours Last activity: 11 hours |
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| at least, wouldn't it be not *that* hard to convert it into a Snes debugger as the processors are kind of similar ? I'm talking with almost none knowledge about all of this, so this is a simple question... |
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Someguy Buzzy Beetle It seems as though the girl you've fallen for is also a pyromaniac. Level: 32 Posts: 134/397 EXP: 193329 For next: 13113 Since: 03-15-04 From: I'm proud to be an American... I think... Since last post: 1 day Last activity: 5 hours |
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| That joke is possible because he'd just have to mod VBA, looking at the features and functions of FCEUXD, and VBA has several debugging tools allready, I wish more emulators were like it. The thing I'd love to see the most is that feature that makes a source code out of the rom by playing all the way through it and having it read the stuff and all that. (edited by Someguy on 12-17-04 04:29 PM) |
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bbitmaster Koopa Level: 18 Posts: 39/103 EXP: 25264 For next: 4633 Since: 03-28-04 From: Knoxville, tTN Since last post: 12 days Last activity: 7 days |
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| Someguy; I still do very much plan on making a disassembler that allows that feature, but it won't be done in time for christmas because it's turned out to be a much larger project than what I'd planned for. |
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| Acmlm's Board - I2 Archive - Rom Hacking - FCEUXD W00t. |
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