joshumax (u/joshumax)

joshumax commented on Satoshi – Sirius emails 2009-2011 mmalmi.github.io/satoshi/... · Posted by u/lawrenceyan

noman-land · 2 years ago

Satoshi double spaces after periods.

joshumax · 2 years ago

Yeah, I've always been surprised[1] when people come out claiming to be Satoshi but ignore this very blatant writing style in their own texts. I haven't really interacted that much with them online and both the double spaces and the British spellings struck out to me and a few others years ago.

1: https://news.ycombinator.com/item?id=15917598#15919288

joshumax commented on DSLinux – Linux for the Nintendo DS dslinux.org/... · Posted by u/AntiRush

snvzz · 2 years ago

>DSi

Did DSLinux team ever manage to get it to work on the DSi?

I still have my DSi and it still works, but I remember DSLinux didn't work with it.

joshumax · 2 years ago

Yes, it works, but there are some issues.

The first one being that the SoC configuration runs in DS-compatibility mode which does not expose all of the available RAM in the DSi, and nds-bootstrap won't properly redirect I/O requests to the external SD card, which means you either need to embed the rootfs in the NDS ROM which won't persist changes, or use a flash cart and run the DLDI build instead.

joshumax commented on DSLinux – Linux for the Nintendo DS dslinux.org/... · Posted by u/AntiRush

erik · 2 years ago

I made a few small contributions to this a long time ago. Nice to see that the website is still up!

Probably the most interesting feature of this project was how it handled memory. The DS only has 4mb of ram. And there is no MMU, so swap isn't an option. But the gameboy cartridge port has 32mb of address space mapped to the bus. And there are homebrew/piracy cartridges that fill that space with 32mb of ram. Which is great, except that the DS can only write to the cartridge port on 16-bit aligned addresses. And almost all software will assume that 8-bit aligned writes will work. To make use of the expansion memory the developers ended up creating a patched GCC that would convert any writes to unaligned locations to an appropriate read, 16-bit write, and set of shift operations.

joshumax · 2 years ago

I very fondly remember this project when I was growing up too, and I credit it with sparking my interest in kernel development.

When trying to port some industrial control software to DSLinux, I ran into some bugs around how the SLOB allocator behaved under memory pressure. One of my patches landed upstream, even though SLOB is deprecated now. Still, as a kid starting out in the embedded space, it opened my eyes to the joys of hacking around with homebrew.

Fun fact: a modded DS still powers a large part of my local observatory's equipment.

joshumax commented on FOSS accused of “abuse” by Telefonica because 1998 signed code with corp email github.com/steve-m/speedp... · Posted by u/logronoide

voakbasda · 3 years ago

Why did it get removed? This kind of thing needs to be left up as evidence of their incompetence and as a warning to others that would follow in their footsteps.

joshumax · 3 years ago

Sorry, I think this might tangentially be my fault. I know someone who works on the GitHub team and let them know about the situation via IM. A few minutes later both the account and the issue disappeared.

joshumax commented on NASA’s Webb takes star-filled portrait of Pillars of Creation nasa.gov/feature/goddard/... · Posted by u/pizza

chubs · 3 years ago

I was wondering that too. I'm not a photography expert, but i recall that lens flares are in the shape of the lens. Since the telescope uses those honeycomb lenses, the 6-sided flares seem to make sense. Happy to be corrected of course.

joshumax · 3 years ago

If by "lens flares" we're referring to the 6 spikey lines jetting from the stars, those are known as diffraction spikes and are a result of the 3 spider vanes holding the secondary mirror in front of the primary mirror cluster at the center of the optical axis. As light enters the primary mirror cluster in the JWT, bright points of lights such as stars have visible aberrations due to the position and orientation of these vanes. In the JWT which uses 3 of them, their orientation creates this 6 spike diffraction pattern. In the case of the Hubble telescope, which is based on the RC telescope design, it uses 4 vanes which creates a 4 spike diffraction pattern instead.

joshumax commented on Stellarium 1.0 stellarium.org/release/20... · Posted by u/bscphil

joshumax · 3 years ago

Funny I should see this on the front page of HN the day before I finish my Stellarium port for Nintendo Switch [1]. Unfortunately a lot of the UI code in the 1.0 release made it harder to port so I'm currently basing the Switch version on the 0.xy tags, but it's still a great accomplishment for the Stellarium team!

1: Unless I get approval from Nintendo AND Noctua you will need an RCMed Switch with Atmosphere to run it.

joshumax commented on I hacked an office telephone to play Doom neilbostian.github.io/#/d... · Posted by u/joshmanders

joshumax · 4 years ago

Funny how two people can hack two separate home phones to run DOOM without realizing it until after the fact. For perspective, I posted a blog article about modifying a CaptionCall phone to run DOOM at the same time [1] as this was posted! What a unique coincidence!

1: https://joshumax.github.io/general/2021/08/11/running-doom-o...

joshumax commented on Wish S-1 sec.gov/Archives/edgar/da... · Posted by u/xoxoy

jackfrodo · 5 years ago

The tolerance of counterfeits is really such a bummer. And it's not just Wish. Amazon has their fair share of counterfeits as well. These "Airpods"[0] are cheap knockoffs, but the images say that they're Airpod Pros. This listing is on the first page of results when you search for Airpods on Amazon.

[0]https://www.amazon.com/Wireless-Headphones-Bluetooth-Earbuds...

joshumax · 5 years ago

Some of the reviews also seem comically fake, take for example this 5 star review for the "Airpod Pros":

'You will love these earbuds . I mainly use the wireless earbuds, I am very satisfied in all aspects. These earbuds also have a solid voice for music. They are easy to pair. More than enough scope. These earbuds work very beautifully. Awesome battery life and clarity. These earbuds are the most convenient and comfortable. I love these earbuds , I already want another pair. Buy them. You will love these earbuds .'