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F4GRX Sébastien reshared this.


I think I'm holding on something decent for the architecture of Hamnet access networks to enable roaming /P prefixes.

isithran reshared this.


Understanding the internals of #Rust and learn how Rust code maps to assembly

https://eventhelix.com/rust/

#rustlang #reverseengineering

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TIFO the Arduino Ethernet library performs unbuffered byte-by-byte transfers when you're using print() and println(), leading to unreasonably increased turnaround count. I'll need to dig in the library's code, to check why, and I'll probably make a bug report.

This doesn't happen when using write() with an explicit buffer length, though.

PCAP: https://app.packetsafari.com/analyze/l/KllD-YoBW6-oT3TQMCLj
"2 text/gemini\r" is written using println(), and the page content with write( void*, size_t).

in reply to isithran

Ok, apparently, print and println are inherited by the stream class, which explains why the write is unbuffered. Next, I'll need to check if I can do a zero-copy write() from flash, otherwise, I'll do a buffered write().

Tavi reshared this.


I wrote a spartan server that runs on an arduino uno w/ an Ethernet shield. Go check spartan://uno.lkw.tf/ with a client like Lagrange.

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isithran reshared this.


OH MY FUCKING GOD.

Pictured: Apple's M2 MacBook Air 13" speaker response (measured with a mic), and the response you get when you zero out every 128th sample of a sine sweep.

They have a stupid off-by-one bug in the middle of their bass enhancer AND NOBODY NOTICED NOR FIXED IT IN OVER A YEAR.

So instead of this (for a 128-sample block size):

for (int sample = 0; sample <= 127; sample++)<br>    // process sample<br>

They did this:
for (int sample = 0; sample < 127; sample++)<br>    // process sample<br>

Legendary audio engineering there Apple.

We can now, very confidently say the audio quality of Asahi Linux will be better than Apple's. Because we don't have blatant, in your face off-by-one bugs in our DSP and we actually check the output to make sure it's good 😂​

FFS, and people praise them for audio quality. I get it, the bar is so low it's buried underground for just about every other laptop, but come on...

Edit: replaced gif with video because Mastodon is choking on the animation duration...

Edit 2: Update below; I can repro this across a large range of versions on this machine but none of the other models I've tried so far. It is definitely a bug, very very obvious to the ear, and seems unique to this machine model.

Edit 3: Still there in Sonoma, this is a current bug.

This entry was edited (9 months ago)

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in reply to Hector Martin

edit:
Not fine broken too!
I first used 300 HZ like in your text.
If I use the 270 Hz like you did in the video it’s very noticeable distorted too.
:-(

plays fine on my M2 MacBook Air 13“ with Sonoma 14.0
Found the very same website tone generator you used.
MBAir plays the same like iPad and not as distorted like in your video - maybe it is an “not all Models” Problem if some hw parts?

Edit:#2
Use 270 HZ not 300 Hz to test.

This entry was edited (9 months ago)

isithran reshared this.


This website is beautiful ✿✿
Deux Fleurs is a non profit organization providing hosting without data centers. They are using old computers at home in France, using open source technologies.

https://deuxfleurs.fr/

This entry was edited (10 months ago)

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40 years ago, DAICON IV (the 4th Osaka Japan SF Convention) opened with the screening of the following short animation film.

The team who produced that short would become later GAINAX, after Bandai noticed and financed them to produce Royal Space Force: The Wings of Honneamise.

https://www.youtube.com/watch?v=j5-4-r3ReUU


isithran reshared this.


Patch submitted to the #Linux kernel by a four-year-old girl🤠

isithran reshared this.


"I was thinking a Demon Core fondue pot would be good decor for a science-theme Halloween party."

isithran reshared this.


isithran reshared this.


Réception du jour :
3 cartes à puces Magis pour m’amuser avec mes Minitels !
Elles contiennent un répertoire de numéros et de services Minitel
Elles sont lisibles directement sur un Minitel Magis mais il faut aller sur un service qui n’existe plus pour modifier leur contenu
#Minitel #Magis #LECAM

isithran reshared this.

in reply to 𝕁𝔢𝔩𝔬𝔯𝔞🦇📼

Elles étaient modifiables via le 3615 MAGIS avec un Magis « tout court »
ou via le 3623 MAGIS avec un Magis Club et une connexion haute vitesse dite « TVR (Télétel Vitesse Rapide) » étant jusqu’à 8 fois plus rapide
in reply to 𝕁𝔢𝔩𝔬𝔯𝔞🦇📼

Sur mon Minitel Magis, ça donne ça pour la carte Magis « orange »
Elle semble être d’origine avec aucun autre numéro et nom de service en mémoire
in reply to 𝕁𝔢𝔩𝔬𝔯𝔞🦇📼

Pour la carte Magis Club
Là il n’y a que des numéros vers des services via une connexion Minitel TVR
in reply to 𝕁𝔢𝔩𝔬𝔯𝔞🦇📼

Il va falloir que je buche la doc technique du lecteur LECAM pour pouvoir lire et modifier leur contenu depuis mon serveur !

Il faudrait aussi que je trouve aussi d'anciennes cartes de paiement des années 90 pour voir si je peux interagir avec via mon serveur

in reply to 𝕁𝔢𝔩𝔬𝔯𝔞🦇📼

si tu as besoin de faire des cartes qui répondent a des apdu specifiques j'ai des samples de javacard qui s'ennuient.. Je peux t'en filer et te montrer comment ten servir. A ta dispo!
This entry was edited (11 months ago)
in reply to 𝕁𝔢𝔩𝔬𝔯𝔞🦇📼

c'est tres utilise dans l'industrie, toutes les cb et sim sont programmees avec ca. Dans le DIY cest encore faisable mais difficile a trouver. Voir les cartes JCOP de nxp. En gros t'as une vm java dans la carte et tu peux uploader des apps qui sont activees par des apdus.
in reply to 𝕁𝔢𝔩𝔬𝔯𝔞🦇📼

Pour la curiosité, j'ai inséré les cartes dans mon Minitel Sillage
Il détecte bien que ce sont des cartes à mémoire mais il ne sait pas accéder à leur contenu

J'aurais bien testé avec un lecteur LECAM pour Minitel 1/1B/2/10/12 qui se branche sur la prise DIN mais j'en ai pas :(


xsspup :blobhaj_hearttrans: reshared this.


Communications with Voyager 2 have paused while its antenna is pointed a mere 2-degrees away from Earth. The team expects it to remain on its trajectory with a plan for the spacecraft to reset its orientation around Oct 15th, enabling communication to resume.
https://go.nasa.gov/3Y9qP7D
in reply to isithran

must be weird to know that one day, somehow, someone is going to be the last person to successfully send a message to Voyager and they'll end up as a footnote in Wikipedia: "communicating with the DSN right up until engineer X inadvertently ejected the antenna during what was meant to be routine observations"

isithran reshared this.


a lot of you here need this sticker. def not me though.
This entry was edited (1 year ago)

isithran reshared this.


A friend attending #ICML just sent me a photo of this front runner for best poster award.
#icml

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in reply to Mark Reid

Reminds me of the people who just go in and hang their work at museums without asking permission (and it stays there for weeks or months at a time) ... you really have to admire it.

https://news.artnet.com/art-world/michelle-hartney-met-protest-picasso-gauguin-wall-labels-1387801

etc... etc..

This entry was edited (1 year ago)
Unknown parent


isithran reshared this.


Cryptography is a tool for turning a whole swathe of problems into key management problems. Key management problems are way harder than (virtually all) cryptographers think.

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isithran reshared this.


巨大抵抗

日々、電子部品を巨大化する生活を送ってます。
ちゃんと実際に使えるようにしてるのがポイント #過去作品紹介

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"Recently the security researchers at Midnight Blue in the Netherlands have discovered a collection of five vulnerabilities collectively called "TETRA:BURST" that apply to almost every TETRA network in the world. These two most critical vulnerabilities allow TETRA to be easily decrypted by consumer hardware." Hahaha oof

https://www.rtl-sdr.com/encryption-on-the-tetra-protocol-has-been-broken/


F4GRX Sébastien reshared this.


I'll wait for a while to see if that article is considered serious, but Europeans should prepare for a radical change if AMOC collapses as quickly as advertised. More than temperatures, my main concern is focused on the drastic reduction of rainfall amounts.

https://www.nature.com/articles/s41467-023-39810-w