movq

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Recent twts from movq

I’ve been making a little toy operating system for the 8086 in the last few days. Now that was a lot of fun!

I don’t plan on making that code public. This is purely a learning project for myself. I think going for real-mode 8086 + BIOS is a good idea as a first step. I am well aware that this isn’t going anywhere – but now I’ve gained some experience and learned a ton of stuff, so maybe 32 bit or even 64 bit mode might be doable in the future? We’ll see.

It provides a syscall interface, can launch processes, read/write files (in a very simple filesystem).

Here’s a video where I run it natively on my old Dell Inspiron 6400 laptop (and Warp 3 later in the video, because why not):

https://movq.de/v/893daaa548/los86-p133-warp3.mp4

(Sorry for the skewed video. It’s a glossy display and super hard to film this.)

It starts with the laptop’s boot menu and then boots into the kernel and launches a shell as PID 1. From there, I can launch other processes (anything I enter is a new process, except for the exit at the end) and they return the shell afterwards.

And a screenshot running in QEMU:

Image

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In-reply-to » QOTD: Do you have a way to get back into your home network if you get locked out?

@mckinley@twtxt.net

Early on, I was thinking about WAN IP address changes as well but it hasn’t happened in ~2.5 years with this ISP.

You mean to say you have the same public IP all the time? For 2.5 years now? Without paying extra? 🤔

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In-reply-to » QOTD: Do you have a way to get back into your home network if you get locked out?

@mckinley@twtxt.net I used to have an SSH port reachable from the outside, but since I’m doing 99.999999% working-from-home now, I no longer need that. (I don’t even have a desk at the office anymore and – and this is important for us Germans! – no parking spot, either! 😅)

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In-reply-to » A blog post of mine is on the front page of HackerNews again. Not sure if I like this. 🤔 Let’s hope there won’t be people shouting at me this time. Angry nerds can get quite emotional …

@prologic@twtxt.net Crap! 🤣

It’s unfortunate that so many people in tech have such an unfriendly communication style. I won’t read comments on HackerNews, for example. It’s sad, because these people might be more knowledgeable and they might have important things to add, but I just don’t like “being shouted at”. 🫤

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A blog post of mine is on the front page of HackerNews again. Not sure if I like this. 🤔 Let’s hope there won’t be people shouting at me this time. Angry nerds can get quite emotional …

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In-reply-to » I was today years old when I learned that Firefox supports custom per-domain CSS. Is this new? I thought I had tried a while ago and it only worked globally. 🤔

@sorenpeter@darch.dk In your profile folder (somewhere under ~/.mozilla on Linux), there’s a chrome folder. You can put a file called userContent.css in there.

This also needs the setting toolkit.legacyUserProfileCustomizations.stylesheets to be true.

(I hope they never remove this, it’s super helpful.)

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I was today years old when I learned that Firefox supports custom per-domain CSS. Is this new? I thought I had tried a while ago and it only worked globally. 🤔

@-moz-document domain(movq.de)
{
    div { border: 1px solid red; }
}

Either way, I love that I don’t need a plugin for that. 🥳

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In-reply-to » Trying to get some custom T-shirts made. Ordered my first one with Media -- Let's see what eh quality of the print and T-shirt is before I make any more 😅

@prologic@twtxt.net Nice, let’s hope this works out! 🔥🐶🔥 I’ve been wanting to do that, too. Better wait until after Christmas, postal service is jammed now. 😂 (Not really, but I don’t want to add to the congestion.)

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In-reply-to » Goodbye Blender, I guess? 🤔

@lyse@lyse.isobeef.org Mostly small and simple stuff, like cable management, headphone rests, pill dispensers (that I didn’t end up using), … The most elaborate thing I made was that contraption for my keyboard, which is a bit hard to explain right now, so here’s some photos:

Image


Image

I didn’t end up using that, either. 🥴

In general, I print very little. So little that some of my supplies have simply gone bad, like that “3D LAC” (sprayable glue).

@aelaraji@aelaraji.com Yeah, I saw that when googling the issue. I’m on Linux, there are no DLLs to swap. I could use an older version indeed. 🤔 Let’s see if I can find some better alternative first. (Let’s face it, Blender is hard to use.)

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Goodbye Blender, I guess? 🤔

Image

A bit annoying, but not much of a problem. The only thing I did with Blender was make some very simple 3D-printable objects.

I’ll have a look at the alternatives out there. Worst case is I go back to Art of Illusion, which I used heavily ~15 years ago.

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In-reply-to » Imagine if all computer UIs would act like the UI from my NAS system... I feel I need to be waiting for output from the machine like it's 1973.

@lyse@lyse.isobeef.org The worst thing is, you never really know when it’s finished. If this showed a blank window for 5 seconds, it would still be annoying, but you wouldn’t start reading/scrolling the page, only for it to jump around like crazy, making you miss click targets, … It’s just horrible. 😂

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I learned numbers today.

$ printf '\xC2\xB9, \xC2\xBC, \xD9\xA4, \xE1\xAA\x96, \xE3\x8D\xA4, \xDB\xB0, \xE2\x9D\xBB, \xE2\x91\xB9, 1' | grep -o '[0-9]'
¹
¼
٤
᪖
㍤
۰
❻
⑹
1

Sad that it doesn’t match on .

Confused by:

$ printf '\xE2\x9D\xBB, \xE2\x91\xB9, 1' | grep -o '[1-6]'
1
$ printf '\xE2\x9D\xBB, \xE2\x91\xB9, 1' | grep -o '[1-7]'
❻
⑹
1

So and are a 7?

Still haven’t dug up why it needs the extra ASCII 1 for anything to match. Maybe tomorrow.

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In-reply-to » Imagine if all computer UIs would act like the UI from my NAS system... I feel I need to be waiting for output from the machine like it's 1973.

@johanbove@johanbove.info … all UIs I have to use at work act like that. No, they are actually worse, because they behave like this: https://hiccupfx.telnet.asia/

I only get to enjoy fast and snappy UIs in my free time when I’m doing hobby stuff. You’d expect it to be the other way around. 🙄

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