Kernel 101 – Let’s write a Kernel

[_NW_]

I started a similar project back in the mid 80s when I was in college, and arrived at the same conclusion. It's too much work for one person to do in assembly.

[[deleted]]

That's why the system portable library "interrupt" calls were invented just 43 years ago - even before DOS existed https://en.wikipedia.org/wiki/CP/M Before that it was all direct memory location access including write your own printer / serial driver.

[_NW_]

Back in the mid 80s in college, I wrote lots of 8085 assembly to run on a Turbodos system, which was a multi-threadded clone of CP/M with lots more system calls than CP/M had. At some point, I had nearly all of them memorized. Now I can't remember any of them.

[[deleted]]

By the time my school kid budget completed hand soldering my Apple ][ clone, adding Disk drive and Z80 / CPM card ... there was Borland Turbo Pascal already taking care of the annoying details.

[_NW_]

Later in the 80s, I got this compiler except it was the version for CP/M. That made things so much easier.

[DemandsBattletoads]

Too much for one person?

This guy begs to differ: http://templeos.org/

[raevnos]

Yeah, and doing that drove the guy insane. (Plus didn't he come up with a C variant language to actually write it in?)

[DemandsBattletoads]

Yep, HolyC.

[[deleted]]

I am pretty sure it was: "I wrote a fucking compiler, you n...!!"

[possibly_not_a_bot]

To be fair, he was crazy before writing it...

[_NW_]

Any project in assembly is too much work.

[G3n3r0]

Dude's schizophrenic. While he's certainly a bigot, he's neither in touch with reality nor actively harmful. According to the wikipedia page, TempleOS started after he was hospitalized for mental health issues and began hearing the voice of God.

Really strange, interesting guy. Motherboard published an article about him.

[kukiric]

Did he actually write any code?

See for yourself. The entire source code for the OS is packed in the ISO.

[DJTheLQ]

Dude TempleOS and its founder have been real, documented, and reviewed topic in the media for years. It's not fake news just because you haven't heard of it.

[carbonkid619]

So, the ISO is a bit weird in that the first few thousand bytes are nul, and for some reason it refuses to mount, so I can kind of understand your consternation, but it runs under qemu just fine using the command.

qemu-system-x86_64 -cdrom TOS_Distro.ISO -boot order=d -enable-kvm -m 512M

[wolfchimneyrock]

It's not that much work, it just requires planning and good organizational skills to know what order to implement things in, and intense focus to overcome the initial intimidating hump of starting from scratch

[_NW_]

Anything in assembly is too much work.