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Author Topic: Java on the TI-Nspire?  (Read 33853 times)

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Offline Goplat

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Java on the TI-Nspire?
« on: January 16, 2011, 05:55:59 pm »
I've discovered that the TI-Nspire's CPU supports a feature called Jazelle which allows Java code to be partially interpreted by hardware, making it significantly faster than it would be with a plain interpreter. Obviously, the 90MB Java runtime environment is never going to fit on the Nspire, but I wonder if it might be practical to port something like J2ME. It seems a shame to let that hardware go to waste ;)

Here's a little test program, that uses Jazelle to calculate 2+2 (impressive, huh? ;D)
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Offline apcalc

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Re: Java on the TI-Nspire?
« Reply #1 on: January 16, 2011, 06:05:46 pm »
This looks pretty interesting!

Now that I kinda know Java in preparation for AP Computer Science, I guess I would be interested in trying this! :)

Great find, Goplat! :D
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Offline bsl

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Re: Java on the TI-Nspire?
« Reply #2 on: January 16, 2011, 08:20:09 pm »
Nice find Goplat !!!!
I was looking into that possibility a year ago before Ndless came out.
I though I read in the ARM docs somewhere that Jazelle was superceded with something else -
that could run byte code from other interpreted languages - its been a while
I have to go over the documentation again.
EDIT: Jazelle's successor : ThumbEE
« Last Edit: January 16, 2011, 08:43:52 pm by bsl »
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Offline qazz42

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Re: Java on the TI-Nspire?
« Reply #3 on: January 16, 2011, 10:05:20 pm »
and yet no .NET support for .NET programmers like me :(

other than that,, nice find
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SirCmpwn

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Re: Java on the TI-Nspire?
« Reply #4 on: January 16, 2011, 10:23:31 pm »
I've been thinking about how hard it would be to port Mono, so just wait a bit :)
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Offline willrandship

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Re: Java on the TI-Nspire?
« Reply #5 on: January 16, 2011, 11:30:12 pm »
Well, about the JRE size issue, there is an SD host on the bottom dock port, so we might get another 32 GB added to that :w00t:

Unfortunately, this doesn't mean minecraft :P
« Last Edit: January 16, 2011, 11:30:27 pm by willrandship »
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Offline z80man

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Re: Java on the TI-Nspire?
« Reply #6 on: January 17, 2011, 01:26:17 am »
Hmm if only TI made calcs with x86 procs, then we would have minecraft :P
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Offline fb39ca4

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Re: Java on the TI-Nspire?
« Reply #7 on: January 17, 2011, 08:51:52 am »
A minecraft clone could be doable using a raycaster, but the maps would have to be quite small.
Also, I dont think the architecture of the processor matters-Java was designed so it could be ported to (almost) any system.
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Offline Munchor

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Re: Java on the TI-Nspire?
« Reply #8 on: January 17, 2011, 08:54:54 am »
Quote from: fb39ca4 on January 17, 2011, 08:51:52 am
A minecraft clone could be doable using a raycaster, but the maps would have to be quite small.
Also, I dont think the architecture of the processor matters-Java was designed so it could be ported to (almost) any system.

And there is already a nice raycaster, right? Oh wait, it's not Java. But I think Mark (creator of ndoom) used premade code for doom, so premade code of MineCraft would be possible?
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Offline calc84maniac

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Re: Java on the TI-Nspire?
« Reply #9 on: January 17, 2011, 09:08:26 am »
Is minecraft open source? If not, then no.
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Offline Munchor

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Re: Java on the TI-Nspire?
« Reply #10 on: January 17, 2011, 09:09:14 am »
Quote from: calc84maniac on January 17, 2011, 09:08:26 am
Is minecraft open source? If not, then no.

Yeah, I forgot that.
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Offline fb39ca4

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Re: Java on the TI-Nspire?
« Reply #11 on: January 17, 2011, 09:37:08 am »
No,  I meant doing it from scratch, as the PC version takes up waaaaaaaaay too much memory to fit on the nspire. I got an out of memory error once on a computer with 2GB ram and nothing else running.
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Offline Deep Toaster

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Re: Java on the TI-Nspire?
« Reply #12 on: January 17, 2011, 12:30:18 pm »
A simple version of Java? That'd be really awesome!

Plus we don't have to worry about networking or any of that stuff, so you could get the JRE nice and small :D
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Offline ExtendeD

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Re: Java on the TI-Nspire?
« Reply #13 on: January 17, 2011, 02:46:06 pm »
This is brilliant!
I thought Jazelle was disabled on the TI-Nspire.
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Offline willrandship

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Re: Java on the TI-Nspire?
« Reply #14 on: January 17, 2011, 03:10:48 pm »
But so was third party coding in general :P until you came along :)
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