Posts for Dwedit

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Posted: 2/12/2008 5:02 PM
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Dwedit
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Donkey Kong Arcade was written for the Z80. The NES has a 6502.
Posted: 2/11/2008 5:59 AM
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Dwedit
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I always preferred the 100% run of Gimmick, but this is a great run too.
Posted: 2/9/2008 4:14 AM
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Dwedit
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There's also the "trick" where you use a malformed FLV which claims to be longer than it is, then you use a higher bitrate than Youtube allows. Youtube divides the total file size by the reported size to determine bitrate, and if it's below a specific threshold (I forget the exact value, something like 350kbps?), it will accept a pre-encoded high-bitrate video. FLV must be MPEG 4, not VP6.
Posted: 2/8/2008 1:52 PM
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Dwedit
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So when does this submission go to gruefood as "cancelled"?
Posted: 2/7/2008 8:17 PM
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Dwedit
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In other words, Gens rerecording needs to store the hash or checksum of the rom that created the recording.
Posted: 2/7/2008 5:39 PM
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Dwedit
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I love how there are nice screenshots of Sonic 3 here...
Posted: 2/5/2008 4:35 PM
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Dwedit
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What's up with the sound effects on those youtube videos?
Posted: 1/23/2008 5:50 AM
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Dwedit
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The NES sends its image to the TV at 60.0988 Hz, faster than the NTSC standard's 59.94Hz. The TV does not provide any kind of feedback back to the NES.
Posted: 1/22/2008 6:44 AM
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Dwedit
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Warp wrote:
I think that's one of the problems with trying to emulate such a system. Unless I'm completely off-track, I assume that the chip inside the NES which draws things on screen and launches NMIs for the CPU works independently, regardless of what the CPU does. In other words, the chip is most probably not synchronized in any way with the CPU clock. This means that an NMI launched by this chip may happen at any time, but the CPU can only handle it no sooner than at the next clock cycle.
The CPU and PPU run off the same 24MHz master clock, so they are perfectly synchronized. They just get different dividers.
Posted: 1/20/2008 3:04 PM
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Dwedit
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Since there are exactly 3 PPU cycles per CPU cycle (on an NTSC system), I don't think there could possibly be any variation in performance which would result in missing lag frames across different NES systems. The only source of variation across different NES systems is possibly a different base clock not exactly equal to 1.7897725 MHz. But the ratio of CPU cycles to frames would never change. There aren't too many for emulators to miss lag, mainly these conditions: *failure to emulate the sprite 0 hit exactly *failure to emulate DMC channel robbing clock cycles *failure to emulate MMC3 scanline counter correctly
Posted: 1/19/2008 10:54 AM
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Dwedit
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P.JBoy wrote:
The times would be wrong anyway due to lag (even the slightest lag), so it really doesn't matter
um... what? It's not like lag is emulated incorrectly on the NES.
Posted: 1/19/2008 6:43 AM
Post subject: NTSC NES runs at 60.0988 FPS, not 60FPS. All times are wrong
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Dwedit
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The times on this website assume that there are exactly 60 frames per second. However, the NTSC NES does not run at 60 FPS! The NTSC NES runs at 60.0988 frames per second while the screen is turned on, and 60.09847 when the game turns the screen off. NTSC TVs are flexible enough to handle the slightly off framerate. Exact value of the framerate is (1789772.5 * 3 / (341*262-0.5)) FPS with screen on, and (1789772.5 * 3 / (341*262)) with screen off. For instance, the 17912 frame SMB1 movie by klmz now clocks in at 04:58.04 instead of 04:58.53. Then Adelikat's 464795 frame movie of Dragon Warrior 4 clocks in at 2:08:53.85, instead of 2:09:06.58. Now, the emulators themselves may play the games at exactly 60FPS, and generate movies at 60FPS, but that is incorrect behavior.
Posted: 1/12/2008 7:13 AM
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Dwedit
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So you like low-life beeping, huh...
Posted: 1/4/2008 9:48 PM
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Dwedit
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A good SMB2 rom does not exist. A good SMB2 disk image, however, does.
Posted: 1/4/2008 2:59 AM
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Dwedit
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2.5 seconds faster! WOOT!
Posted: 12/31/2007 12:38 AM
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Dwedit
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I'm just wondering here. Since the speeddemosarchive run of this game is 6 minutes faster than the TAS, should this TAS be considered obsolete?
Posted: 12/31/2007 12:23 AM
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Dwedit
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WWF games are not WWE games. The first game which can be called a WWE game was released on the Gamecube (and other systems?), and still did not consistently apply the WWE's logo. In other words, it's WWF dammit.
Posted: 12/30/2007 7:55 AM
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Dwedit
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Immediately solve puzzle. I think someone did this run and it got rejected.
Posted: 12/27/2007 7:06 AM
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Dwedit
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There's really no way to do a "low %" run, unless any slow run with a lower percentage obsoletes a faster run with a higher %.
Posted: 12/22/2007 6:17 AM
Post subject: Mario Stole The Precious Thing
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Dwedit
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http://www.youtube.com/watch?v=Z34BCyi91yM This one uses a sped up version of the Mario 64 1 star TAS as background video! Parody of "Marisa Stole The Precious Thing" by IOSYS
Posted: 12/21/2007 3:39 PM
(Edited: 6/4/2022 5:00 PM)
Post subject: Running ancient games at high clock speed?
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Dwedit
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Lots of old DOS games do not contain proper synchronization code, and run extremely fast under higher speed processors. What are the rules regarding such games?
Posted: 12/19/2007 4:46 PM
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Dwedit
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I showed this run to my brother, and he laughed his head off at the parts where Mario gets fireworks.
Posted: 12/15/2007 6:06 AM
(Edited: 12/15/2007 6:14 AM)
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Dwedit
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Gruefood now! This is very suboptimal.
Posted: 12/13/2007 2:55 AM
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Dwedit
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Which version of FCEU plays this? It desyncs for me at Glass Joe.
Posted: 12/11/2007 10:13 PM
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Dwedit
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How should the little battle against Dark Knight Cecil go? Fight Cecil with manipulated critical hits, or let time expire? Edit: Also, would you be kind enough to include savestates at the beginning of new parts to the movie, so I don't have to fastforward to see what's new?
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