KnightOS – An open-source OS for calculators

[Pxtl]

I'd just love to see a solid open-source standard graphing calculator app for the common tablets - something like a more user-friendly version of gnu octave or something. The vendor lock-in by the education industry and TI is absurd.

[ibrahima]

Seriously, the few times a month I need to crunch numbers I reach for my phone, then get frustrated and just use Google because my TI83's batteries have been dead for years. I don't know what it is but I haven't seen a touch calculator interface anywhere near as good as a standard graphing calculator for just banging out some computations.

[listic]

I wish there was an open-source OS supporting phones like Nokia 1202 http://www.gsmarena.com/nokia_1202-2573.php or cycle computers http://www.sigmasport.com/en/produkte/bikecomputer/topline_w... - tiny devices with dot matrix displays and traditionally limited capabilities.

I thought it's never going to happen (unless I get wealthy and support creating such a device, of course) but this one is close.

[maxerickson]

Rockbox is also sort of close: http://www.rockbox.org/

I guess it already supports more chips and screen sizes than something aimed at TI calculators would.

[striking]

You certainly could replace the memory chip of whatever device you want. Chances are, as long as it has a few necessary components (or code to emulate them) Linux will run pretty well.

[ne0phyte]

Neat. I sold my TI-84 Plus in favor of a HP RPN calculator: It's not really comparable, but there are more open source projects around calculators like the WP34s[1] project which turns a cheap HP business calculator (HP 20b/30b) into a RPN calculator with a lot of features.

[1] http://sourceforge.net/projects/wp34s/

[striking]

Holy heck, an in-browser demo. I've always wanted to try KnightOS but the TI-Nspire steadfastly refuses to run it.

[Sir_Cmpwn]

You're in luck!

www.omnimaga.org/ti-nspire-projects/z80e-for-nspire/

[th0br0]

I like the ?sneaky-repost ;)

[q3sniper]

Ha! Preemptive multitasking and a rotating cube as a demo. Nice work. Would love to see this ported to something else constrained like the Pebble Watch.

[Sir_Cmpwn]

If anyone here is interestd in helping with the project, we just made this tool inspired by Mozilla's "What can I do for Mozilla" tool:

http://www.knightos.org/contributing/what-can-i-do.html#!/pr...

It's not just assembly!

[internetisthesh]

This makes me so sentimental. My parents did not let me have a computer when growing up, but they did let me have a calculator. So I did what I had to do to buy a ton of them (TI82, HP48GX etc). At some point I purchased a TI92 but when reading about that now I see it was classified as a computer and not a calculator.

[the_imp]

@Sir_Cmpwn, you should document somewhere that at least the TI-83+ ROM will run fine on Android using the Andie Graph emulator. :)

[Sir_Cmpwn]

Send a pull request! We're very open to them. Also accepting patches on the mailing list as of today if you prefer.

[sysk]

I can see this being used to cheat in exams ;)

[TazeTSchnitzel]

The facilities of the TI are generally usefull for that.

Which is why TI added a key combo that erases the memory.