Drew DeVault's Blog

This site and all its contents are MIT licensed.

I write software. Occasionally, I will compose a post for this blog.

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Recent Posts

Process scheduling and multitasking in KnightOS

02 Sep 2014

I’m going to do some blogging about technical decisions made with KnightOS. It’s an open-source project I’ve been working on for the past four years to build an open-source Unix-like kernel for TI calculators (in assembly). It’s been a cool platform on top of which I can research low level systems concepts and I thought I’d share some of my findings with the world.

Python's datetime sucks

28 Jun 2014

I’ve been playing with Python for about a year now, and I like pretty much everything about it. There’s one thing that’s really rather bad and really should not be that bad, however - date & time support. It’s ridiculous how bad it is in Python. This is what you get with the standard datetime module:

Why Go's error handling doesn't sit right with me

07 Jun 2014

I’ll open up by saying that I am not a language designer, and I do like a lot of things about Go. I just recently figured out how to describe why Go’s error handling mechanics don’t sit right with me.

Hacking on your TI calculator

25 Feb 2014

I’ve built the KnightOS kernel, an open-source OS that runs on several TI calculator models, including the popular TI-83+ family, and recently the new TI-84+ Color Silver Edition. I have published some information on how to build your own operating sytsems for these devices, but I’ve learned a lot since then and I’m writing this blog post to include the lessons I’ve learned from other attempts.

The bug that hides from breakpoints

02 Feb 2014

This is the story of the most difficult bug I ever had to solve. See if you can figure it out before the conclusion.

Getting started with fish shell

13 Jan 2014

There’s a cool shell called fish that I think is pretty damn good. However, the documentation leaves something to be desired for new users and I found it a little difficult to get into it simply because there wasn’t a lot written about it. So here I am, writing about fish. Consider this a pitch for why you should be using it instead of whatever else you’re using now (bash, probably).

Custom Music Syncing on Android

24 Aug 2013

I have an HTC One, with CyanogenMod installed. I usually use Spotify, but I’ve been wanting to move away from it for a while. The biggest thing keeping me there was the ease of syncing up with my phone - I added music on my PC and it just showed up on my phone.

You don't need jQuery

19 Aug 2013

It’s true. You really don’t need jQuery. Modern web browsers can do most of what you want from jQuery, without jQuery.