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| Acmlm's Board - I2 Archive - General Emulation - IPS patching on the fly for N64 emus |
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spoondiddly Goomba Level: 7 Posts: 14/22 EXP: 1235 For next: 213 Since: 06-12-05 Since last post: 14 days Last activity: 17 hours |
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| Well it's pretty obvious why this hasn't been implemented yet, concidering you can probably count the number of existing patches on one hand. However, concidering that a number of programs are popping up that allow image swapping, level addition, and of course the obligatory translations it seems it really should be done sooner rather than later. The oddest thing is that N64 hacking almost completely revolves around editors, so you could really have a stack of patches pile up rather quickly. It's even odder that it was never even concidered, concidering s/nes emulators have been doing it for years and that all the necessary file manipulation is already executed when the rom image is loaded into ram. On the other hand, there never really was a good reason, was there? Anyway, excuse the rant. I get like this from time to time. |
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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: 6867/8210 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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| What we really need is a better patching system. IPS can't handle byteswapping or files above 16MB. | |||
Lenophis Super Koopa Level: 44  Posts: 707/830 EXP: 584360 For next: 26925 Since: 03-15-04 From: Duluth, MN Since last post: 4 hours Last activity: 3 hours |
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Originally posted by HyperHacker And how many times has it been that it "should be done?" Far too many. How about it somebody actually makes one now? |
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spoondiddly Goomba Level: 7 Posts: 15/22 EXP: 1235 For next: 213 Since: 06-12-05 Since last post: 14 days Last activity: 17 hours |
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| Well, heck, we could come up with a format right and post it here. start with some fun ASCII word for file extension. The patcher would have to figure out the original rom format, but the patch header can tell how the data in the patch is swapped. 0 - no swapping 1 - 16 bit swap 2 - 32 bit swap 3 - 64 bit swap all other values reserved for future use, or just use binary flags along the first nibble. To accomidate any size file dynamically, each memory address could be preceeded by the length of the address. For example: 03 975420 would place the following data at 975420. Then the size of the data would use the same format: 02 1000 so the next 1000 bytes are copied to the address given. end with END in ASCII It isn't as efficient as IPS, but it would handle any file size given. - Come to think of it, you could figure out the swapping if the first chunk of data given was a sample of the file's data from a certain address. ie: check custom robo's header for given value to determine file swapping 0 0 01 00 04 80371240 first byte: first nibble: swapping present in patch data second nibble: swapping of following sample so you know what you're testing second byte: length of following address third byte: address of data - 00, or start of file fourth byte: length of test data 5th - 8th byte: data at location for non-swapped file. By reading the four bytes at the given address and testing against this, file swapping can be determined by the patcher. |
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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: 6884/8210 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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| Well it's easy to make up a format. The hard part is making a program to apply - and even moreso create - a patch from it. | |||
aioria1981 Ninji Level: 20  Posts: 112/234 EXP: 36701 For next: 5738 Since: 07-20-05 From: Viña del Mar, Chile Since last post: 5 days Last activity: 5 days |
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| You can use this in the while. It will generate an executable patch based in the orginal and hacked roms (it was originally based in cracking apps, but it can be applied to roms too) |
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