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isithran reshared this.


中国官方宣传账号的言论的消失速度,有时候比公知被封还快。几年后搜索一下,只能找到一堆没有出处的批评,成了虚空打靶。各位网民们下次开喷之前,别忘了附上其引用言论的完整出处(日期、内容、媒体、作者、链接),并顺手存档一下:要么把链接提交 archive.org,要么附带完整原文或者截图,即起到了“示众”的作用,也为后来人留下线索。无论作者、读者个人什么立场,都只有好处。

isithran reshared this.

in reply to 网上邻居

我写一篇宣传口号演变历史的文章,发现当时的微博全被删除了。


I may be a sinner for building a Layer 7 HTTP accelerator for constrained ham channels, but I never wrote (and will never write) a Network/Port Adress Translator there are limits to a lack of decency 😸

isithran reshared this.


A REQUEST: If you own a French CD-ROM computer game called "Pop Anim'", please let me know. I could use it for some research but haven't been able to find a circulating copy yet. (It's at the BnF but I can't get there right now.)

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ENTSO-E has just released its comprehensive factual report on the April 28th Iberian blackout.

entsoe.eu/publications/blackou…

in reply to F4EGX

C'est un rapport factuel, donc qui contient les données techniques. L'analyse de l'origine sera publiée dans le rapport qui devrait sortir dans 4 mois environ.


Local Winlink access point upgraded to 9,600bps. Real-world transfer rates (during the mail transfer phase) hover around 6,200bps.


TIFO axspawn (the linux utility to handle incoming AX.25 connections) has a built-in inline compression feature (your client needs to send "//COMP ON\n" once the LAPB bearer is established. Axspawn then sends "\rCOMP 1\r" and turns on huffman compression).

sources.debian.org/src/ax25-to…

in reply to isithran

The only software, to my knowledge, able to turn on such compression is TNT ( home.snafu.de/wahlm/tntdoc.htm… ).

Some TNC may be able to handle it on the fly, but I've not tried it.



Currently working on an ALS162 time receiver. Getting my paws on NF C 90-002 really helped to think of an easier strategy to acquire and sync with the signal.

Turns out this signal is a 40Bd 3-state TCM.

First step, however, is to write a stub that will generate a baseband clone of the signal. For now I'm able to generate a static frame. The scrambler is implemented, and I'm working on the CRC-13.

Phil M0OFX reshared this.

in reply to polprog68k

@polprog68k The signal is generated with a PWM pin, my reconstruction filter needs to be improved.
in reply to isithran

@polprog68k this, or maybe linked to the fact this old scope tends to generate blips when using the digital scroll in dual input mode.
in reply to isithran

oh that makes sense. it looks like a nice scope, whats that bar at the bottom? readout or zoom?
in reply to isithran

Honestly, the choices that were made are quite elegant, imho: out of 9 phase transitions, you can recover up to 4 bits in 4 cases, more than 1 bit for 4 others, and the last, which is the XOR of the 3 previous bits.
This means you can recover erasures in many cases ✨💜✨

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- Thunderstorms depends on it to grow.
- It juts out into the sea, watching waves crash below.
- You won’t find it on common folk, but legends let it billow.

What am I?


isithran reshared this.


UEFI sucks eggs, Microsoft and Intel fucked it up so badly,

I'mma make my own,

The Catgirl Firmware Interface,

With lesbians and ELF files

isithran reshared this.

in reply to Andrew Zonenberg

@azonenberg exacty — also, DTBs don't know how much RAM you have, the board revision, ... It's just unmanageable for users.

RISC-V, in the spec, say that the DRAM init code shall deliver a device tree to any later stages, with the hardware inventory hardcoded,

In practice, I need U-Boot specifically to patch the broken device tree. If it were correct, I could use Linux directly after the DRAM init code.

in reply to Simon Richter

@GyrosGeier > how much ram

Isn't that the whole point of SPD (since PCs ~always used DIMM/SODIMM based memory)? You just need some board-independent init code that reads the eeprom from each slot, figures out how much is there, and brings it up.

I don't see why you need per-board firmware when the entire point of the eeprom is discoverability.



Basic summary of my comment to FCC filing 25-201, with regard to a secondary spectrum allocation on the 430-440MHz band (you have until 2025-07-21 if you wish to do it too: fcc.gov/ecfs/filings/express?p…)

Matthieu F4FNE reshared this.



Wrote a small utility to convert targeted APRS traffic to Nagios passive check events to monitor a remote site's power supply status.


Got my hands on something quite special. Those who know know.

F4GRX Sébastien reshared this.



Weaponizing DRM APIs against AI scraping wasn't a move I'd anticipated, but its elegance is so underrated.
signal.org/blog/signal-doesnt-…

f4ivy reshared this.




Currently writing a middleware that interfaces a D-Star Radio with packet applications.
On this video: Winlink e-mail transfer over DV Fast Data.
youtube.com/watch?v=rKkFJ9TmqQ…

F4ACU Matthieu reshared this.



Rewrote my DExtra / D-Star dissector, I'm able to read DV Slow data packets, DV Fast Data should come quickly once I'm laying my paws on a pcap trace to validate a few assumptions. Payload reassembly, superframe-wise, is being written.

f4ivy reshared this.



1 bug report and 1 feature request submitted to Wireshark devs, so that AX.25 dissection gets better 🐱

gitlab.com/wireshark/wireshark…
gitlab.com/wireshark/wireshark…

loic_fejoz reshared this.



FBB Dissector for Wireshark: here you go, code qualification has not been completed, I need to continue bug hunting (some additional traces needed).
github.com/dscp46/dissectors


TCP reassembly is now correctly handled, time to write the LZHUF extraction routine (don't wanna T_T)


Finally took another take to implementing the FBB protocol dissector. The command interpreter is almost finished.
The last obstacle is to implement LZHUF decompression in LUA to decode payloads.

isithran reshared this.


De moins en moins d'écrans CRT fonctionnent et c'est normal, les composants s'usent notamment les condensateurs. Beaucoup d'écrans ont été jetés et ça devient de plus en plus rare d'en trouver alors si possible ne les jetez pas, vendez-les ou donnez-les pour pièces. :blob_cat_heart:

(ceci était un message du Comité de Restauration des Tubes)

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isithran reshared this.


A good opportunity to remind you to check your:

backups
balls
breasts

Unless you are on a train, in which case, do it later.

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isithran reshared this.


12-bit rainbow palette by @kate : iamkate.com/data/12-bit-rainbo…

#color #design #freeContent

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isithran reshared this.


Add passkeys to the list of things that didn't advance as much in 2024 as we thought they might. That's because some companies are still making the process complicated. pcmag.com/news/the-passkey-fut…

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isithran reshared this.


A blockchain. That's all, that's the post.

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isithran reshared this.


purrfection 👌
This entry was edited (8 months ago)

isithran reshared this.


isithran reshared this.


These cancer cells have destroyed so many retro computers. It's extremely sad. And if you have an old computer around from the 386 or 486 era, I suggest you check and remove that thing ASAP #retrocomputing #vintagecomputing

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isithran reshared this.


Is an IRC channel about electronics a jRC channel? a jωRC channel?

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Funny JS hack (not yet in production, but soon to be): you can detect a slow internet link using readyStateChange events to offer a lighter web page :3

isithran reshared this.


Tech is political.

You encode your values, your attitude and your bias into the code.

The tech you create can give you legitimacy. It can give you influence. Get rich enough (or start out rich enough) you get doors opened to you.

It's all power.

We can see what some people in tech do with that power.

We can however choose to not contribute to that enablement.

You're in FOSS you've made some sacrifices.

What's a little more?

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Jan 1 11:35:18 CET: %SOCL_MASK-4-HWPROGERR: Hardware mask module failure - spoons pool exhausted

isithran reshared this.


This article is very uncomfortable to read. wheresyoured.at/never-forgive-…

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in reply to Jess👾

By that time we were able to stop using the 1, but it was still "local long distance" for a few years after that, at least. I have no idea when the area started requiring 10 digit dialing because I had stopped using a land line by early 2007.

I can't talk about phone switching without sharing the "Speedy Cutover Service" video from the 80s.
youtube.com/watch?v=saRir95iIW…
@JessTheUnstill@infosec.exchange



Yearly UPS battery deep test
7 years-old VRLA batteries
7% load
100->10% in 51 minutes
Nominal operation runtime is above 5 hours for that load, 8+ with shedding.


Time to order new batteries, lol.



isithran reshared this.


New make !

Laser engraved slate coasters with famous CPU markings...

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in reply to vince

@f4grx And here the 11 ones I made for me :)

(now waiting for blank ones to be delivered)
1/3

68hc11
Altera Cyclone V
AMD Ryzen
Ampere

in reply to vince

@f4grx I will make some burning this week. I can "take orders" if some of you wants. Lets say I can book a total of 10 blank slate coasters for mastodon people.

I need a picture B&W (or vectorized) for ~9x9cm (the tile is 10x10cm but the hammered edges prevents nice result)

I propose 4€ each (without postage cost, to be added depending where you live).

First come, first served.

in reply to vince

@f4grx

AAAAAAHHHHHRRRRRGGGGGG ! je viens de découvrir....
C'est génialement geek, bravo !

Et dire que j'ai un laser que je n'exploite qu'un jour par mois...

je vais vous copier sans vergogne !

in reply to vince

faudrait envoyer un 74F00N a la personne concernée ^^
This entry was edited (9 months ago)