Hacker News: jbit

New comment by jbit in "Rust is rolling off the Volvo assembly line"

jbit — Tue, 08 Oct 2024 03:04:37 +0000

Hightec also have an ISO26262 qualified compiler focused on automotive: https://hightec-rt.com/rust

So there's lots of focus on having a good alternative to C/C++

New comment by jbit in "Intel undercut a standards body to give us the PCI connector"

jbit — Sun, 19 May 2024 12:25:09 +0000

There were a few vendor-specific VLBish busses:

Opti local bus was the most common, and had a few different boards: https://ancientelectronics.wordpress.com/tag/opti-local-bus/

Gigabyte had one that was only used for the "GA-486US" motherboard. The connector was just two 16bit ISA cards back to back: https://theretroweb.com/motherboard/image/ga-486us-front-60b...

I believe there were some others from different vendors.

The signaling for all of these was pretty similar to VLB, since it was just the 486 bus on a connector.

New comment by jbit in "Show HN: Send me an IRL message and watch it arrive"

jbit — Sun, 12 Nov 2023 01:43:28 +0000

Check out the `--shutter` option for `libcamera-vid`, it allows you to tweak the camera's exposure time which might help with the screen refresh banding. `--shutter 60` sets the exposure time to 60ms, which might be a good starting point.

EDIT: Ah, actually the unit is microseconds, so `60000` would be 60ms

New comment by jbit in "GNU Boot sent a cease and desist to Libreboot"

jbit — Sun, 30 Jul 2023 02:33:30 +0000

https://web.archive.org/web/20230719185342/https://libreboot...

For context, this is the page the cease and desist was referring to.

New comment by jbit in "Free SVG images and icons, released under Creative Commons CC0"

jbit — Mon, 29 Nov 2021 07:04:21 +0000

I wonder how legit this site is. It says:

> These SVG images were created by modifying the images of Pixabay.

And indeed, the images seem to be taken from pixabay (e.g. [0], [1]), however the pixabay license is NOT CC0, and specifically forbids redistribution [2]:

> Don't redistribute or sell Pixabay content on other stock or wallpaper platforms.

[0]: https://svgsilh.com/image/1801287.html

[1]: https://pixabay.com/vectors/grooming-cat-kitty-kitten-feline...

[2]: https://pixabay.com/service/license/

New comment by jbit in "Breaking into ASOS"

jbit — Mon, 03 Aug 2020 08:25:43 +0000

Or even find the /etc/shadow contents in the hexeditor and empty the root password field. Searching for "root:" usually gets you to the right place.

Most *nix systems are happy if you pad the left over bytes with newlines, so there's no need to mess with the filesystem metadata or anything like that. :D

New comment by jbit in "How did anyone do math in Roman numerals? (2017)"

jbit — Tue, 28 Jul 2020 01:22:15 +0000

I'd never heard of this documentary, so I took a look. I assume you meant "The Bit Player"? ( https://www.imdb.com/title/tt5015534/ ). It looks interesting, and it's on Amazon prime video so I'll give it a watch. Thanks!

Taking Advantage of Auto-Vectorization in Rust

jbit — Mon, 18 May 2020 06:44:34 +0000

Article URL: https://nickwilcox.github.io/blog/autovec/

Comments URL: https://news.ycombinator.com/item?id=23219125

Points: 2

# Comments: 0

New comment by jbit in "Show HN: Memos – Search engine for your screenshots and photos"

jbit — Thu, 03 Oct 2019 12:51:51 +0000

Adding to this:

f-droid also encourages reproducible builds: https://f-droid.org/en/docs/Reproducible_Builds/

This means you can verify the APK on the f-droid store matches what's in github by building it yourself and comparing the signatures.

And if you want to do this, f-droid has an automated way: https://f-droid.org/en/docs/Verification_Server/ Of course, you still have to trust the verification server source code, but that runs locally on your hardware and is auditable.

New comment by jbit in "Why did old PCs have key locks? (2017) [video]"

jbit — Thu, 09 May 2019 06:56:06 +0000

Why not also add the kitchen sink! http://www.john-ward.org.uk/personal/john/computers/html/roc... :)

New comment by jbit in "Ask HN: Will Rust replace C/C++? What's holding it back? Are you using it?"

jbit — Thu, 22 Nov 2018 03:46:41 +0000

Rust has a lot of good IDE options these days: https://areweideyet.com/ They decided to focus on the "Rust Language Server", which many IDEs use, rather than on one specific IDE.

New comment by jbit in "Linux Kernel Lockdown and UEFI Secure Boot"

jbit — Thu, 05 Apr 2018 09:57:38 +0000

As well as the IMA Appraisal feature that mjg59 mentioned, you can also integrity check your entire filesystem with verity[1]. Android uses it to make sure the system partition isn't tampered with.

[1] https://www.kernel.org/doc/Documentation/device-mapper/verit...

New comment by jbit in "Build yourself a Linux"

jbit — Fri, 05 May 2017 01:13:08 +0000

The embedded version of CLFS (Cross-Compiled Linux From Scratch) covers building a musl + busybox system: http://clfs.org/view/clfs-embedded/x86/ But the more resources available on this kind of thing the better IMHO, there's not really a one size fits all :)

New comment by jbit in "I included emoji in my password and now I can't log in to my Account on Yosemite"

jbit — Wed, 16 Dec 2015 11:33:50 +0000

As somebody who uses numerous keyboard layouts on a daily basis, this is an interesting idea!

I wonder how hard it'd be to make a script where you specify which keyboard layouts you're likely to encounter and it finds the common symbols...

Of course, if you specify dvorak it'd wreck everything :)

New comment by jbit in "BB-8 Droid Teardown"

jbit — Thu, 10 Sep 2015 10:42:14 +0000

> Also note the lead weights used here to make the product feel more substantial

Are these weights really made of Lead? Or is "lead weight" just an industry term for anything heavy? If they're actually Lead, how do toys like this conform to RoHS?

New comment by jbit in "Dear Google Mail Team"

jbit — Sun, 19 Jul 2015 08:42:34 +0000

Google Apps has a few more knobs at least: https://support.google.com/a/answer/2368132?hl=en

New comment by jbit in "Explanation of 44.1 kHz CD sampling rate"

jbit — Fri, 23 May 2014 17:39:14 +0000

I believe all NTSC equipment is required to support Black&White System M signals, which are exactly 60Hz[1]. It probably made their equipment much simpler to forget about colour encoding entirely. (And it made the 44,100Hz fit too)

[1] http://en.wikipedia.org/wiki/CCIR_System_M

New comment by jbit in "Intel unveils tiny $99 MinnowBoard Max open single-board computer"

jbit — Wed, 02 Apr 2014 00:49:23 +0000

Small correction: The MinnowBoard MAX only has 8MB of on-board flash, not 8GB. (It's an SPI chip to hold the firmware)

New comment by jbit in "NSA data volumes in terms of STASI filing cabinets"

jbit — Fri, 05 Jul 2013 16:04:55 +0000

While I agree that they likely store much less data than five zettabytes, your assumption that all their storage is on constantly spinning hard disks seems flawed.

(Tape libraries and various other offline/nearline storage solutions would be viable for most of their data)

New comment by jbit in "Exodus - A cycle-accurate Mega Drive/Genesis Emulator"

jbit — Tue, 07 May 2013 21:43:41 +0000

Indeed it's rare, but not unheard of. For example the "nocash" series of emulators has extensive debug support (breakpoints, memory viewers, disassemblers, hardware traps, etc)

http://nocash.emubase.de is the website if you want to check them out.