- 34
- 28 055
Hackerspace Gent
Belgium
Приєднався 28 кві 2019
The official channel of Hackerspace.Gent, the Hackerspace in beautiful Ghent, Belgium. Also known as 0x20, the hexadecimal value for an ASCII whitespace.
Stop saying computer science is math!
Computers have much less to do with Mathematics than many people think. Saying it does hurts the industry.
In this talk, I show that it causes people to stop learning programming because they think they're too stupid to understand the math behind programming. Moreover, it's completely false that computers at their core use complex mathematics.
In this talk, I show that it causes people to stop learning programming because they think they're too stupid to understand the math behind programming. Moreover, it's completely false that computers at their core use complex mathematics.
Переглядів: 179
Відео
Is modern cosmology broken? Eh... kinda
Переглядів 105Рік тому
In this talk I outline the contents of my dissertation wherein I examine the biggest issue facing modern observational cosmologists: Hubble tension. I explain the background, techniques used, their strengths, flaws and controversy and show how we are trying to reverse engineer the universe to understand it in the present. (Part 2 of 2)
A Gentle Introduction to Nix
Переглядів 12 тис.Рік тому
During this talk, Bryan will touch on the following subjects: - What Nix (the project) is - Why this is a good idea - How to read Nix (the language) - How to use Nix (the package manager) - What NixOS (the operating system) is - Where to ask for help - … Do you have a colleague or friend that just can't stop talking about Nix? How it's reproducible, the future of software. Why it's so much bett...
Leaderless communities: intro to The Hackerspace Blueprint - Newline 2023
Переглядів 25Рік тому
Leaderless communities: intro to The Hackerspace Blueprint - Newline 2023
CHT/Totalism.org hackbase in Kunsthal Gent
Переглядів 1453 роки тому
CHT/Totalism.org hackbase in Kunsthal Gent
Newline 2021 Party with 3D63, Mindrone, Eptic Lusion and Duke of Philberg!
Переглядів 1583 роки тому
Newline 2021 Party with 3D63, Mindrone, Eptic Lusion and Duke of Philberg!
This DONGLE receives IMAGES from THE ISS // Kristoff // Newline 2019
Переглядів 1635 років тому
This DONGLE receives IMAGES from THE ISS // Kristoff // Newline 2019
Extract your DNA with VODKA // Alex Hart // Newline 2019
Переглядів 2035 років тому
Extract your DNA with VODKA // Alex Hart // Newline 2019
Music FROM A GAMEBOY // 3D63 // Newline 2019
Переглядів 2855 років тому
Music FROM A GAMEBOY // 3D63 // Newline 2019
Hearing Colors // Umut Eldem // Newline 2019
Переглядів 3175 років тому
Hearing Colors // Umut Eldem // Newline 2019
Debian Packaging DIY // TQ Hirsch // Newline 2019
Переглядів 1865 років тому
Debian Packaging DIY // TQ Hirsch // Newline 2019
Just bought a pair. Its limited with its fight with google but they seem to be coming around on bothsides. Im glad I waited a tad bit because they had some app launch issues.
R u trans? Fer
Thanks
Good Talk. I wish someone could somehow "simplify" the tedious system of working with the configuration files. ... Maybe someday I'll get it. With good instructions - I'll fiddle with the registry in windows.
crazy
Nix is not niks.
Really great introduction, thank you!
Questions from the audience are unintelligible and often rambling ! As the presenter has encouraged interruptions, but does NOT recap the question before explanation, it leaves the viewer lost as to what's being discussed. I'm assuming they were fine details worth understanding. New to NIX, I'm frustrated with the content on UA-cam. Lots of poor audio, disjointed content, total lack of editing. Where are the Master-Class quality courses? I get that I'll have to go deep into the manual for myself, just looking for a ladder to help me climb up.
Vimjoyer has great NixOS introductions from scratch
Hey @theosky7162, I'm the person who's speaking in this video. My apologies for not recapping the questions that were being asked, and allowing the rambling. I tend to enjoy the chaotic nature of small talks. 😅 I'll try to keep this in mind for next time, though! I'm not sure how deep you already are in the Nix ecosystem, or how much you know. But, I can wholeheartedly recommend Silvan's 'The Nix Hour', here on UA-cam. If you happen to catch that one live, you can even ask Silvan some pretty in-depth questions. 😉 ua-cam.com/play/PLyzwHTVJlRc8yjlx4VR4LU5A5O44og9in.html&si=PJN9pSiQtPx_8eE- Matthew Croughan produces-in my opinion-high quality Nix content. They tend to dig deep into one specific topic, but interesting to watch nonetheless. www.youtube.com/@matthewcroughan Also, the Discourse forum is pretty active, and chances are that people will answer your question on the official matrix channels. discourse.nixos.org/ matrix.to/#/#community:nixos.org
The "Master class quality courses" are on YT channels that are in the business of making that sort of content. Or Coursera, Udemy, SkillShare etc,. This is bonus content someone was nice enough to share.
It's free content bro
What sort of Boring lectures you must attend, where you aren't allowed to ask questions, except at the end ? I agree, they are not for recording, but better than sitting through just the presenter speaking.
Super engaging and clearly explained presentation!
Wow... thank you so much for the incremental introduction!! This is great. The boxes & lines at the beginning helped make clear in my mind the fundamental action within nix: take some inputs, transform and build, and then store the outputs.
Is there a grammar for Nix? Whenever I learn a new language, having a grammar to look at helps a great deal.
When I searched about nix os this video is popped up to me. And the presentation is so good that I got stick to it for whole time...
what's the controversy about flakes?
I would assume it's in a forever experimental stage
Video is broken. Only 6 seconds were uploaded.
Really nice introduction. Thank you
thx a lot !!
i don't know if this an error or a shitpost
There is quantum physics. Which can have spookie action at a distance. Does the Universe have spookieness
Is programming a different form of mathematics ? Is human talking a form of mathematics ? Perception. You can perceive or at least try to relate to things in a form of mathematics.
certified expert can get things wrong
11:30 time is independent in itself and space is dependant on HxWxL... 4d coordinates might be accurate but it's wrong as relativity hasn't properly taken into account electromagnetism.... not cosmology/astronomy's fault because the g/factor of quantum electrodynamics was made with 'fudged' numbers in initial calculation... go get them tiger but better to study einsteins own words/papers than blindly believing in the modern scientists who worship him as another prophet.... even he knew light wasn't a constant and was unsure of many of his assumptions until his death.
9:20 ... sun's are plasma not gaseous, they can't collapse or they break the 2nd law of thermodynamics.... all photos show is non-luminescent condensed matter and the theory of relativity is based on mathematical abstractions that just led to even bigger abstractions of reality.
Audio issues stop at 7:00.... thank-god my fellow millennials are pushing back against scientific dogma and doctrine to establish a model that truly represents reality... if we are a galactocentric universe then I WANT TO KNOW!!!! If the aether exists then I WANT TO KNOW!!!
Promo-SM 🌈
nice! really liked seeing the graphql integration. Haven't seen it else where on universal starters 👏👏
Is there a recording of the talk?
No sound?
not on the introduction but starts at 7:00
it got hacked 😂
🤙
Why do I have to look at this guy for 75% of the time (I knew how he looks like in 30 seconds), and only very briefly can see the sheets with the subjects he is presenting?
The FPGA in a MISTer has endured over 2 Million flashes without fail in a multi unit test. There is likely a limit but it could be up in the trillions and would require a person or automated system to reflash it for days to hit it. The SD cards will die before the FPGA, likely kill a good number of them first. So I would say until you killed at least one SD Card you got nothing to worry about.
A clarification from the talk. Intel bought Altera, not Terasic. Altera designed the Cyclone V, and became Intel FPGA once acquired. (at least there is no apparent information online that they did - it really wouldn't make much sense for them to do so).
My doorbell was broken, and I did put up a sticker with my phone number... They just bang on the door. In 3 weeks time, only our gardener called the number.
It's worth mentioning that Intel have always made the chips for Altera for many years. They decided to finally buy Altera outright in 2015. I'm not 100% sure if Intel bought Terasic as well (the makers of the DE10 Nano board). Good presentation, btw. ;)
7:12 AFAIK, both the FPGA and ARM can access DDR3 directly through the Altera/Intel Hard Memory Controller IP. So they do share access, but the FPGA doesn't need to request RAM access from the ARM as such. (the differene with a "Hard" controller like for DDR or the ARM SoC is it's "baked in" to the silicon, so is not reconfigurable like the FPGA section is.) And yep, the latency of DDR is surprisngly high vs oldskool SDRAM. DDR is optimized for long burst transfers, so it has a longer setup time for an access, but can then burst data MUCH faster than older SDRAM. The DDR does run at 400 MHz on the DE10 though (800 MHz effective), so the latency on the user (core) side isn't too bad, but still not *quite* low enough for many retro systems. The thing with most retro systems, though, is they tend to do a lot of random requests to/from RAM, and that's where the latency of DDR is a big downside. The SDRAM module is often running at around 100 MHz or so, which is usually say 8 or 16 times faster than the core's own clock. It takes around eight SDRAM clock cycles to read or write any random 16-bit word, which means many cores won't even see any additional RAM latency vs the machine's original timings.
110,000 Logic Elements is quite a lot of logic. There are almost no other dev boards around for the price that come close to amount of logic, plus the ARM, USB, Ethernet, and all the other features. The DE10 Nano is an absolute bargain for what it offers. Sure, it's not as cheap as a typical Rasp Pi setup, but they are different beasts. hehe It should always be said that having a retro computer or console on a core does *not* automatically make it 100% perfect. It's still down to the skill and tenacity of the developer. (Even for some of the older machines, there are a few new discoveries being made about the exact timings of the original logic. Figuring out that stuff is a benefit to both FPGA cores and to software emulators.) The cores on MiSTer do also owe a LOT to software emulator devs. Source code from projects like MAME can be invaluable when writing cores. They are quite different approaches, though. Writing cores often means looking at the original schematics again (if available), or hooking up a Logic Analyzer to a machine or arcade board, to determine the exact timings. Re-implementing the hardware at the gate level has various challenges that you can more easily bypass with a typical software emulator. The FPGA versions generally also run at the exact same clock frequency as the original machine in most cases, or at least a multiple of it. It's far more about the clock-by-clock timings. It's fair to refer to the cores "Low-level emulation, in hardware". But, I think it's safe to say that for the smaller/simpler cores, especially from the 8-bit era, many of those machines are very well understood now. Just like software emulators, FPGA cores are helping towards better understanding of how those old systems worked at the lowest level. Cores like NES, SNES, Genesis, Apple-II, Speccy, C64, Amiga (Minimig), and the older arcade cores have been improved a lot just over the past few years. Most are now very accurate and have very high software compatiiblity. A lot of work is left to be done, to verify core accuracy against the original hardware, but it's an ongoing thing. I should also say that for anyone who thinks a MiSTer setup is bit pricey, keep in mind that some of the arcade cores like CPS (Capcom) and Neo Geo (SNK) can run almost all of the games from the original hardware with no problem. And to buy all of those arcade boards or cartridges could cost hundreds or thousands. Sure, you can play those games on a software emulator and have a very good experience already, but the FPGA cores do have benefits in terms of very low latency, simpler direct output to a CRT display (with original sync timings), and eventually we should see the accuracy of the cores improve even further.
I'm curious when the project will jump to a more powerful FPGA to be able to run N64/PS1/later gen devices.
There is a ps1 and Saturn core making good progress, from what I gather that will be the limit of the current hardware. Anything more powerful is likely years off mostly because of the cost I guess.
I'll add some extra information for clarity. One of the first questions he was asked was about the video output, there are other options than HDMI. You can get a Direct Video HDMI to VGA adapter and change an option in the ini file to get RGBHV VGA output to an old computer CRT if you want. You can mod that same hdmi to vga adapter with a diode and resistor to get YPbPr Component video via a VGA to Component cable as well. Also you can get the MiSTer analog IO add-on board for the MiSTer which outputs Analog RGBHV video in addition to the HDMI video simultaneously. Regarding the legality... In most countries there is existing precedent protecting reverse engineering of hardware and software. Emulators (both software and hardware emulators) and even clone systems are protected under this as long as they didn't use any of the original intellectual property that is still protected. So as long as they didn't use the literal designs of the chips, stolen from Nintendo or something... then it should be fine. Typically emulator developers are very careful not to even look at leaked source code and things like that so they don't get into legal trouble. The games are the thing that are in a legal grey area for the most part with emulation. At least in the US, the only people that get lawsuits sent after them are those who are mass distributing the ROMs to people, or the few emulator devs that made the dumb decision of prepackaging copyrighted content in with their emulator.
0:59 actually, the DMG boot ROM holds that title. It was dumped in 2008 or 2009 by reading out the bits optically from a chip decap, so 20 years after release. Or if you want to get into the nitty gritty, the DMG0 boot ROM was not dumped until 2016. It's a boot ROM found only in very early DMG units and it was pretty much not even known to exist until shortly before it was dumped.
How much can you reduce the system clock frequency and remain code execution functional and does it check for that?
What was the audience answer to the FPGA re-programming limit? I couldn't hear it.
The SRAM-based FPGA in the DE10-Nano (the Cyclone V) should roughly be equivalent to how many times SRAM can be rewritten, which is in the billions. Intel doesn't have a limit specified in their documentation for any of their SRAM-based FPGA's for this reason. The FPGA's that are EEPROM-based/Flash-based or even Antifuse ones have a limit typically. EEPROM/Flash-based FPGAs are around 100 programming cycles, and Fuse/Antifuse are 1 time only, irreversible (these are used for radiation hardened systems, like those used in aerospace and mil-spec systems).
It's an SRAM-based FPGA, not flash, so there is no read-write limit.
Awesome presentation. I start to wonder, if I could add the pokemon RF to a homebrew cardridge. but the dumping technique is far more cool an intresting, and cool to see names from ppl I know (digitally)
MiSTer FPGA is such an awesome project. I'm glad more people are getting the opportunity to learn about it!
Is there a link to the original presentation slides? I would like to be able to follow along but the slides are hard to see...
Thanks for the question! You can find the slides here: git.titandemo.org/PoroCYon/nl21brom/uploads/ea6d5c7dbd4c83b26294a4365b958307/nl21brom.pdf
Got my DE10 nano on the way, waiting for the MiSTer multisystem!
I've finally taken the plunge and am ordering this week, gonna stick with just the board, ram and usb hub for now.
My Mister rig is my favorite entertainment device, use it every day. This is a nice overview of the project.
df86q vum.fyi
fqej8 vum.fyi
Thanks for the interview, it was great to be here and share my experience with you folks! =)
Haha, real world grown up travel adventures with the gameboy, nice way to describe her hobby. Had to look up the little sound dj website, it is so old school.