It looks cool, but is there a reason why you aren't using colour?

Nice info, got it working, installed GCC and python and vim, slow, but they work.

Best of all GOT DOSBOX SEMI WORKING.)

Really slow, and its overstretched because its drawing using directfb

Booting Windows 3.1 now 

(Sorry for links, on my phone, can't resize em)
https://docs.google.com/file/d/0B5Tkl4WZkr3cZDZQR0ZzZE5lSHc/edit?usp=docslist_api
https://docs.google.com/file/d/0B5Tkl4WZkr3cR2JHVmFER0lHWDQ/edit?usp=docslist_api

And does windows 3.1 actually work on the nspire? Is it fast enough to be useable?

So CodeWalrus isn't meant to become an other calculator comunity, it's mainly just a group of people programming projects together?

ISSOtm: you seem to be using Dropbox as your image host. When you do that, please make sure you put the images in the public folder and copy the links from there. Currently, they seem to be in a non-public location because I can't see them (Dropbox gives me an error saying I'm not allowed to view those files, so your images will probably only show up to you and not anyone else).

I think that if you really want speed, you should use a LUT for the sine function, calculate the cosine as sine+90°, and calculate the tangent as sine/cosine. This does require a bit of memory and isn't really related to math though.

Related: I previously had no idea how the sine, cosine and tangent were actually calculated, and good job on simplifying it so much!

EDIT: while the z80 will probably not be able to calculate that at high speed for use in games, I guess it might be usefull for CAS-related programs.

That old menu doesn't look ugly to me, it looks clean and modern. The new one does have more 'feel' to it though.

Well, soon after I got my 84+ for school, I started programming in TI-BASIC on it (which was the first time I ever programmed BTW). I didn't know yet that there was a big online comunity about it yet, so I just made some games on my own. A few months later, I discovered how to program on a computer, and while a computer is much more powerfull than a calculator, the challenge of the limited hardware together with the simplicity of the calculator (and it's availability during school) kept me interested.
3 years later, there was a period in school in which teachers were regularly absent, which meant that lessons were often replaced by 'study' hours (in which you have to sit silently in a classroom and can do homeword), which were obviously pretty boring when you don't have much homework, so I started searching the internet for more games to put on my calculator. I found a lot of them on ticalc, and there I also discovered that the calculator can be programmed in a different language that's a lot more powerfull than TI-BASIC: assembly, so I decided to look into that.
I learned the basics of assembly from some internet tutorials, and then decided to create a 3D engine with it as my first real project since I was programming 3D games on my computer at that time and I wanted to do the same on my calc.
Off course, starting a big project as a beginner ofthen doesn't go as expected, so after a while I got stuck and decided to look for help. At first, I ended up at Ti-Wereld (a Dutch calculator community), but decided to move on due to the very low activity. Then I eventually ended up here at Omnimaga.