Notices by Srevin Saju (srevinsaju@mstdn.io), page 3

After several hours of debugging and a hundred open tabs, I present: Hello World in a Bootloader.

Looks okay.
#bootloader #assembly #university

Re: [BITS 16], the most reasonable explanation I could find was that, when Intel introduced 32-bit CPU, it wanted to maintain backward compatibility with its older 16-bit bootloaders. So it made, the 32-bit mode of processing as a protected on-demand mode. Due to this convention, CPU's start processing the code in 16 bit mode, which then can transfer to 32 bits or 64 bits.

So it suddenly occurs to me that I have a pending #assignment on by Operating Systems course. The assignment seems to be trivial: it is to create a bootloader which prints 'Hello World' on the console. Thought it would be interesting to understand this with some help from my mastodon folks 😄

#university #operatingsystems #bootloader #nasm #assembly

PS: future me, if you happen to be reading this post after you have forgotten about this, you can thank me later.

So looking at what has been provided to me, I have this in the material:

#assembly #bootloader #university

Here is the code after a bit of good formatting(?) but at least its more readable. I have a lot of questions, but we will go through it line by line.

#assembly #bootloader #university

Meanwhile, a question, I see `PrintCharacter` which seems to be called a 'procedure' in #assembly (I wrote function call 🤦♂️), but does Assembly have any good style guidelines? For example, preference of snake_case over CameCase, or something like that? and what about indentation? cc @codewiz

@codewiz I guess it does have some @tchx84 ‘s flatseal magic in it. I vaguely recall a conversation about the same.

Trying out NixOS today!
#nix #linux

I'm here!
#nix #nixos #linux

Have been pretty amazing so far, detailed review soon!

Coming from Fedora Kinoite (KDE edition of Fedora Silverblue), which features immutability and multiple versions of the OS which you can revert to in case something goes wrong, #nix exceeded my expectations, since, with Nix, you can now have multiple versions of your main OS `/` , and your `/home` too.

@codewiz How about “your pudding only” or “your only pudding” 🤔

@codewiz here it is: https://codeberg.org/forgejo/forgejo, and here is their roadmap https://codeberg.org/forgejo/forgejo/issues/59

@codewiz I am interested to see how Gitea’a fork, “Foregejo” will be implementing federation of Git repositories

@codewiz I always thought 私のせいalways meant “it’s because of me”, but didn’t know that if we use a different kanji, it would be “it’s my fault”, but both of them make sense.

@codewiz I will go for a ‘no’ because I am here for the drama. And yes, we have mastodon 😛

Our first task in the microprocessor and microcontroller lab was to 🥁🥁🥁….
Add two numbers on the intel 8086 microprocessor
#university #assembly #cse #processor #intel8086

Our professor started off the lecture by giving an example of the Intel 8086’s segmented memory: code, stack, extra and data. It was interesting to see Intel 8086 discussed here, something I recently saw on Mastodon, being taught at university.
cc @codewiz
#university #compsci #cse #Intel8086

Apparently this post by @kenshirriff was my introduction to the Intel 8086 chip. Not sure if these chipsets are going to be an important part of the syllabi.
https://oldbytes.space/@kenshirriff/109412325323089208
And… we have these Carl Hamacher’s Computer Organization, 5th edition as a reference material.
@codewiz

Today we had our first lecture on Computer Architecture and Organization
#university #computer #cse #compsci #engineering #assembly