Emulating the XO: Difference between revisions
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<< [[Developers/Setup]] |
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In the past, OLPC produced alternative software images which could be run in emulators such as QEMU and VMware. This meant that development and testing could happen to a limited extent without requiring an XO laptop. |
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[[Image:AP1_39.jpg|thumb|laptop-in-laptop]] |
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'''In 2013, please see Tom Gilliard's many [http://wiki.sugarlabs.org/go/Sugar_Creation_Kit virtual machine images ready-to-go].''' |
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Emulators allow you to run a "virtual machine" on a (reasonably powerful) host machine. There are a number of emulator systems available which can be used to run a simulated OLPC-XO. |
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Note, XOs are readily available to genuine volunteer contributors through the [[Contributors program]]. |
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Strictly speaking, what is emulated is not an XO laptop itself but simply a generic x86 PC on which the XO system software may run, therefore this emulation is hardly faultless in itself. Further, the customized devices on XO latop can not be emulated and some peripherals in your PC may not be supported through the "emulated" XO. |
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[http://sugarlabs.org Sugar], the unique user interface of the XO laptops, is also distributed as a generic software project and can be developed and tested on "regular" computers as well as XOs. See [http://wiki.sugarlabs.org/go/Downloads Sugar Labs Downloads] for the full range of options, such as [http://wiki.sugarlabs.org/go/Sugar_on_a_Stick Sugar on a Stick]. |
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See the [[Developers/Setup#Emulation Packages/Products|Developer's Manual]] for a discussion of the general merits of the various packages and the ways you might want to use emulation in the development process. Always keep in mind that emulation is [[Emulating the XO/Limitations of XO disk images|NOT perfect]]. |
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For emulation of extremely old builds, you may be able to come across "ext3 images" on some corners of http://download.laptop.org and http://xs-dev.laptop.org/~cscott/olpc/streams/ which can be loaded into emulators. You are unlikely to find support for them! |
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See [[Emulating the XO/Comparison of Alternatives|Comparison of Alternatives]] for a grid showing which environments have been tested and found to work on which host operating systems. |
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* Configuration and Usage |
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** [[Emulating the XO/Quick Start]] |
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** [[How to set up for development on linux emulation]] |
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* [http://www.ibm.com/developerworks/linux/library/l-sugar-olpc/index.html Tutorial] on how to get this working. |
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* [[Improving emulation]] |
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== Emulators == |
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At present, [[QEMU]] is mainly used. |
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If you are running linux, there is an ''experimental'' [http://dev.laptop.org/~mncharity/olpc_xo_qemu/ package] to simplify using qemu for emulation. Feedback encouraged. [[User:MitchellNCharity|MitchellNCharity]] 15:03, 6 January 2008 (EST) |
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== Build recommendations == |
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For running XO disk images on an emulator, you must use an '''ext3''' image, not the [[JFFS2]] image which is for on-board NAND flash memory. Please note that the current stable release is available only in [[JFFS2]] and the "latest" developer build may not yet be usable in ext3 at this time. So please check some older builds. Some builds are better than others and the most recent one will not always work. |
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Here is a summary of current status. Please add your own experiences here, and in [[User Feedback on Images]]. |
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Current [http://xs-dev.laptop.org/~cscott/olpc/streams/joyride/ joyride] builds generally work (as of ~1400). |
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Presence service (mesh view and collaboration) wont work by default, because they are configured with a presence service providing jabber server of ship2.jabber.laptop.org, which doesn't yet exist. There is an overloaded and fragile jabber.laptop.org which may be used in the meantime. -- [[User:MitchellNCharity|MitchellNCharity]] 22:42, 14 December 2007 (EST) |
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: Another jabber server alternative is: jabber.xochat.org (typically 60 to 80 people online) --[[User:ixo|ixo]] 03:29, 5 January 2008 (EST) |
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: Please be aware that the xochat.org server is also overloaded, and the load is proportional to the product of the number of registrees times the current number of users, for the reasons documented at [[XMPP_Extensions]]. So don't connect (and thus automatically register) unless you will really be contributing, and/or set up your own ejabberd server. [[User:NealMcBurnett|NealMcBurnett]] 15:39, 7 January 2008 (EST) |
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I've had good luck with all of the ship2 builds under VMware Workstation 6. -- Ed Borasky (Znmeb), 15 December 2007. |
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{{ Latest Releases | livecd = inline | devel = inline | extra }} |
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== External links == |
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* [http://www.ibm.com/developerworks/linux/library/l-sugar-olpc/index.html#resources Sugar, the XO laptop, and One Laptop per Child], M. Tim Jones. ''developerWorks''. IBM, 2007-04-24. |
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[[Category:OS]] |
[[Category:OS]] |
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Latest revision as of 16:26, 30 July 2013
| modify |
In the past, OLPC produced alternative software images which could be run in emulators such as QEMU and VMware. This meant that development and testing could happen to a limited extent without requiring an XO laptop.
In 2013, please see Tom Gilliard's many virtual machine images ready-to-go.
Note, XOs are readily available to genuine volunteer contributors through the Contributors program.
Sugar, the unique user interface of the XO laptops, is also distributed as a generic software project and can be developed and tested on "regular" computers as well as XOs. See Sugar Labs Downloads for the full range of options, such as Sugar on a Stick.
For emulation of extremely old builds, you may be able to come across "ext3 images" on some corners of http://download.laptop.org and http://xs-dev.laptop.org/~cscott/olpc/streams/ which can be loaded into emulators. You are unlikely to find support for them!