Re: XENified images for XO
Dennis Gilmore wrote: On Thursday 10 April 2008, Marcus Leech wrote: Has anyone done any work on building XENified images for XO? I'm interested in this for building a large-scale virtualized XO environment for testing purposes. The other option is to run the XO image in HVM mode, but that limits which processors I can use to host such a thing. Cheers The work to do this is not trivial. however, im working on moving us to a Fedora-9 base. in doing so we should rebase the kernel. I understand dilinger has done alot of work to make sure we will be able to use 2.6.25 We should work with him to make sure that paravirt support in 2.6.25 is turned on. I'm the maintainer of the paravirt-ops Xen support, so tell me if anything needs doing to make this work. J ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Physics with Python and Pygame (Chipmunk 2D Physics Engine)
Chris Hager wrote: Hey all. Recently I did some research on 2D (SDL) physic engines, and found that one of the most popular (called Chipmunk) with python bindings (pymunk) recently got an update. I had a look into it, and am totally amazed :) The chipmunk engine is easy, stable, fast, fun, open-source -- and now it's getting really possible to use it with python and especially pygame. Great! I've been playing with chipmunk on the XO a little bit, but nothing really to show off. I was a bit disappointed in the speed of the standard pymunk demo on the XO, but I wasn't sure if it was the physics or just rendering which was slow. What kinds of frame rates are you seeing? J ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Open Simulator with Physics Engine
Edward Cherlin wrote: Has anybody looked at this for the XO? http://opensimulator.org/wiki/PhysicsEngines The physics is not very realistic yet. Presumably we could manage simple statics and dynamics, with graphs of position, velocity, and acceleration. I would like to have a simulation engine available for integration into e-textbooks. What other candidates are there? I've been looking at using Chipmunk (a 2D physics library: http://wiki.slembcke.net/main/published/Chipmunk) to do a simple activity which allows the user to draw shapes freehand, and then have them physically simulated. By choosing different pens, you can draw either fixed, rigid or flexible shapes. People have already developed similar programs using chipmunk, and the demo videos are very interesting. Unfortunately they seem to be under closed licenses. Besides, a Sugar version would be most interesting with some kind of mesh multiuser component, which would probably significantly change how the program evolves. I've done some very early prototypes on the XO, mostly by running the Chipmunk test program. It was surprisingly slow; I looked at optimising chipmunk to use 3dnow, but I suspect the bottleneck is in actually rendering (I have not profiled it properly). I was hoping to use Cairo for rendering, but it seems to be a bit too slow for smooth animated rendering. I was hoping to put together and announce something simple for people to poke at in the next week or two. J ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Open Simulator with Physics Engine
Gary C Martin wrote: Just wanted to chip in with a thought of a simpler activity sim type that could be a low hanging fruit to port or code for the XO. I do love the idea of 'crayon physics' and all the other physics sim spinoffs that are all the fashion just now, but a lot of fun/ exploration can be had with some the old school sandbox type simulations. Yes. The thing I like about crayon is that its immediately accessible, and its obvious what's happening; a few minutes of experimentation will tell you everything you need to know about making things, and yet there's a fairly large range of interesting things you can achieve. There's no distinction between modelling and simulation, aside from having a pause button. But from that base you can easily envisage adding more complex types of items like linkages and motors to allow more flexiblity. Some of the examples at the below URL are way over developed/cluttered (too many material types, unnecessary additions etc), but a more careful design would make a good, single and multi user sharable activity: http://fallingsandgame.com/viewtopic.php?t=1875 Yes, these kinds of literal sandbox games are fun too... J ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Update.1 testing
Jeremy Fitzhardinge wrote: ok flash n:\boot\q2d09.rom Reading n:\boot\q2d09.rom Got firmware version: CL1 Q2D09 Q2D Checking integrity ... AC not present Duh. I just realized this is referring to the fact that its not plugged into mains power rather than anything to do with the Checking integrity... line. I guess there's always a way to misinterpret the plainest message. J ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Update.1 testing
Mitch Bradley wrote:
Jameson Chema Quinn wrote:
Simple. Put the manual install instructions in
http://wiki.laptop.org/go/Manual_Firmware_Install and then, in
each relnotes page add {{:Manual_Firmware_Install}}, which will
include the text of that page in the one it is as a template in.
If you want to be even cooler, in Manual_Firmware_Install, put the
tags onlyinclude and /onlyinclude on the stuff that you want
to be included.
I've done this - and, even cooler, I used a template parameter so that
you can have the instructions refer to the right version, like this:
{{:Manual_Firmware_Install|version=q2d09}} .
Thanks, that will make it easier to maintain new versions of the page.
I'm not having much success with these instructions. I downloaded
q2d09.rom into /versions/boot/current/boot, rebooted into OFW and typed
flash n:\boot\q2d09.rom as the instructions say. However I get:
ok flash n:\boot\q2d09.rom
Reading n:\boot\q2d09.rom
Got firmware version: CL1 Q2D09 Q2D
Checking integrity ...
AC not present
ok
Am I missing something here? I also downloaded q2d09.rom.{sha1,md5,asc}
to the same place just in case, but it didn't make a difference.
Thanks,
J
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