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Acmlm's Board - I2 Archive - General Emulation - NES emu feature | | | |
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teh1337g0d Goomba Level: 9 Posts: 19/26 EXP: 2376 For next: 786 Since: 12-16-04 Since last post: 2 days Last activity: 4 hours |
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Ok. Can anyone tell me if there is an NES emulator with fast forward, rewind and slow motion features? I ask because I dont feel like downloading 100 different emu's to see what has what. | |||
Prier Archangel Administrative Priestess. NUCLEAR SUB WEEEOOOO Level: 119 Posts: 8313/8392 EXP: 18790939 For next: 138352 Since: 03-15-04 From: Nerima Dist. - Tokyo, Japan Since last post: 1 day Last activity: 1 day |
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Fast forward. Not sure if there's been a modified version of FCEU to do the other two. Not like it's ZSNES. |
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teh1337g0d Goomba Level: 9 Posts: 20/26 EXP: 2376 For next: 786 Since: 12-16-04 Since last post: 2 days Last activity: 4 hours |
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Originally posted by Prier Bummer... I thought that might be the case. I know of some that do fast forward and hoped that someone had taken it upon themselves to do slowdown or more importantly rewind. ohh well I guess. thanks for answering. |
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Lenophis Super Koopa Level: 44 Posts: 822/830 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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The front of Schpune I'm working on right now has both fastforward and slowdown, however, good luck ever finding rewind. =\ The front is still in very early beta stages, is kinda buggy, and far from finished. | |||
Darth Coby Vire Dacht je nou echt dat het over was? Dacht je nou echt dat ik gebroken was? Nee toch? Nou kijk eens goed op uit je ogen gast. zonder clic heb je geen kloten tjap... bitch Level: 55 Posts: 1368/1371 EXP: 1240774 For next: 73415 Since: 03-15-04 From: Belgium Since last post: 2 days Last activity: 9 hours |
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How would rewinding work anyway? | |||
Lenophis Super Koopa Level: 44 Posts: 823/830 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 Darth Coby Reverse emulation, which would probably require (probably) a rather large amount of RAM to keep track of registers, flags, and whathaveyou to go backwards with the CPU and PPU. All Zsnes does is reset anyway with its rewind feature (it appears to look like a reset anyway). |
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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: 8145/8210 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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I think most emulators just make save states in memory every few seconds. Reverse emulation would be incredibly difficult if not impossible. How do you un-jump, un-read, etc? | |||
Disch Micro-Goomba Level: 4 Posts: 10/16 EXP: 226 For next: 53 Since: 10-21-05 Since last post: 12 hours Last activity: 1 day |
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There was a discussion on this on nesdev a while ago, and ideas were thrown around quite well. And in fact blargg made a working rewind feature in his emu (though it's an unreleased personal emu). Complete with matrix-style slowdown before rewinding (and when you let go of rewind, it slows down, the plays normal speed), and backwards music, no jerky missed frames (a la ZSNES's rewind... at least the last time I used it) -- the whole 9 yards. I've been wanting to put one in Schpune, but I hate working on that end of development. If I do cave and make my own front for Schpune down the road (not very likely -- at least not in the near future) -- I definately will make a rewind feature. The concept isn't too difficult -- and it's very clever. And yes it does use a substantial amount of RAM. But not enough for it to be a big issue (who DOESN'T have an assload of RAM these days?) - Always be recording a movie. - Savestate at key times every X frames - Keep snapshots of the last Y frames - Keep produced audio of last Y frames stored in a buffer More Savestates = more RAM, but eased CPU usage on rewind. More snapshots = MUCH more RAM, but MUCH easier on CPU usage. Some snapshots are definatly needed though. Old movie data, savestates, snapshots, audio can be deleted once it gets too "outdated". For example, if you want to allow rewinding up to 5 minutes -- then you can trash savestates and movie data after they're 5 minutes old. Snapshots and audio can be deleted much sooner -- like after 1 or 2 seconds. When the user rewinds, you feed him old snapshots and old audio (played in reverse), while loading a state and running the movie code to produce more snapshots/audio. Most of this stuff could be easily user configurable as well -- like the length of time they want to be able to rewind (5 mins is a hell of a lot), how much snapshots/audio to keep buffered... that kind of thing. |
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teh1337g0d Goomba Level: 9 Posts: 22/26 EXP: 2376 For next: 786 Since: 12-16-04 Since last post: 2 days Last activity: 4 hours |
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Originally posted by Disch Wow that is a technical explanation, and I understood it 0_o that a pretty cool idea there fella. In all honestly I would be prefectly happy with just a save state every 3 sec that I could go back to bu pressing a button like on ZSNES, but this is a very cool sounding idea. Anyways, Im sort of disapointed that no NES emu's use this feature but I guess I wasnt really expecting one to be out there. thanks for all the help people! |
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Disch Micro-Goomba Level: 4 Posts: 12/16 EXP: 226 For next: 53 Since: 10-21-05 Since last post: 12 hours Last activity: 1 day |
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I think Xodnizel's (FCEU author) latest emu may have a rewind feature like blargg's. The emu used to be called Nintencer, but then he changed the name and for the life of me I can't remember the new name. You might want to look around for that one. Other than that emu -- I don't think any other one rewinds. |
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