Hardware specification/lang-ja: Difference between revisions

From OLPC
Jump to navigation Jump to search
(rewrite all in progress)
No edit summary
Line 21: Line 21:
* おおよその寸法: 242mm × 228mm × 30mm (詳細な寸法は右の図面を見てください)
* おおよその寸法: 242mm × 228mm × 30mm (詳細な寸法は右の図面を見てください)
* おおよその重量:
* おおよその重量:
** LiFePバッテリ付のXO: 1.45kg (~3.20lbs);
** LiFePバッテリ付のXO: 1.45kg (~3.20lbs)
** NiMHバッテリ付のXO: 1.58kg (~3.48lbs);
** NiMHバッテリ付のXO: 1.58kg (~3.48lbs)
* 構成: 回転軸付きコンバーチブル・ラップトップ、反転可能なディスプレイ、防塵および防滴筐体、ファンなし
* 構成: 回転軸付きコンバーチブル・ラップトップ、反転可能なディスプレイ、防塵および防滴筐体、ファンなし


Line 36: Line 36:
* CPU: x86互換プロセッサ、64KBのL1とIおよびDキャッシュ、最低128KBのL2キャッシュ
* CPU: x86互換プロセッサ、64KBのL1とIおよびDキャッシュ、最低128KBのL2キャッシュ
** [http://www.amd.com/us-en/assets/content_type/DownloadableAssets/33358e_lx_900_productb.pdf AMD Geode LX-700@0.8W] ([http://wiki.laptop.org/go/image:lx_databook.pdf データシート])
** [http://www.amd.com/us-en/assets/content_type/DownloadableAssets/33358e_lx_900_productb.pdf AMD Geode LX-700@0.8W] ([http://wiki.laptop.org/go/image:lx_databook.pdf データシート])
* CPUクロックスピード: 433 MHz;
* CPUクロックスピード: 433 MHz
* ISA互換: MMXと3DNow!のx86拡張命令セットをサポート;
* ISA互換: MMXと3DNow!のx86拡張命令セットをサポート
** Athlon命令セット(MMXと3DNow!拡張を含む)に加えてGeode専用命令セット
** Athlon命令セット(MMXと3DNow!拡張を含む)に加えてGeode専用命令セット
* 周辺チップ: CPUに統合されたPCIとメモリインタフェース
* 周辺チップ: CPUに統合されたPCIとメモリインタフェース
Line 82: Line 82:
** バックライトモード: 高解像度ディスプレイの組込みサブピクセルサンプリングにより、およそ800(H) × 600(V) カラーピクセル、消費電力 0.2–1.0W
** バックライトモード: 高解像度ディスプレイの組込みサブピクセルサンプリングにより、およそ800(H) × 600(V) カラーピクセル、消費電力 0.2–1.0W
* メモリ内蔵[[DCON|ディスプレイコントローラチップ(DCON)]]は、プロセッサがサスペンドしていても、表示を可能にします。また、DCONはディスプレイのためにデータを初期化します。
* メモリ内蔵[[DCON|ディスプレイコントローラチップ(DCON)]]は、プロセッサがサスペンドしていても、表示を可能にします。また、DCONはディスプレイのためにデータを初期化します。
* この[[Display |液晶ディスプレイ]]は私たちの究極の低消費電力技術に基づきます。このXOは、CPUとマザーボードの大部分が、ユーザが気付かないほど定期的に高速で電源を断続していても使用できます。この方法により、大きく電力を節約することができます(えば、使用していないときに、電源管理機能がマザーボードを切っても、ディスプレイは表示されたままです)。
* この[[Display |液晶ディスプレイ]]は私たちの究極の低消費電力技術に基づきます。このXOは、CPUとマザーボードの大部分が、ユーザが気付かないほど定期的に高速で電源を断続していても使用できます。この方法により、大きく電力を節約することができます(たとえば、使用していないときに(たとえ数秒間でも)、電源管理機能がマザーボードを切っても、ディスプレイは表示されたままです)。
''注記: Webブラウザの画像は、非常に荒く[800 × 600]、ブラウザのウィンドウを埋められるように現在拡大されています。
: ''注記: Webブラウザの画像は、非常に荒く[800 × 600]、ブラウザのウィンドウを埋められるように現在拡大されています。


[[Image:EToys - new display.jpg|thumb|right|eToys ([[Squeak]])running on the OLPC display]]
[[Image:EToys - new display.jpg|thumb|right|OLPCの試作ディスプレイ上で動作するeToys ([[Squeak]])]]


{{ Translated text |
{{ Translated text |
Line 99: Line 99:
| display = block}} <!-- change to 'display = none' to hide english text -->
| display = block}} <!-- change to 'display = none' to hide english text -->


===統合された周辺機器===
''Integrated peripherals:''
* キーボード: 70+ キー, 1.2mm ストローク; sealed rubber-membrane key-switch assembly
* キーボード: 80+ キー1.0mm ストローク、密閉されたラバーメンブレン・キースイッチ部品
** [[OLPC_Keyboard_layouts|キーボードレイアウト]]
** レイアウト図: [[:Image:Keyboard english.png|英語]], [[:Image:Keyboard arabic.png|アラビア語]], [[:Image:Keyboard thai.png|タイ語]], [[:Image:NG-MP-alt.png|西アフリカ(ナイジェリア)]], [[:Image:BR-MP-v1.png|ポルトガル語]], [[:Image:ES-MP-v1.png|スペイン語]], [[:Image:Ethiopic-B3.png|アムハラ語]], [[:Image:Rwanda-B3.png|フランス語(検討中)]], [[:Image:Urdu-MP.png|ウルドゥー語]], [[:Image:RU-MP-v1.png|キリル文字]], [[:Image:TR-MP-v1.png|トルコ語(検討中)]], [[:Image:NP-MP-v1.png|ネパール語]], [[:Image:MO-MP-v1.png|モンゴル語]], [[:Image:KA-MP-v1.png|カザフ語]], [[:Image:MR-MP-v2.png|デバナーガリ文字]], [[:Image:UZ-MP.png|ウズベク語]], [[:Image:PS-MP.png|パシュトウ語]], [[:Image:AF-MP.png|ダリ語]]
* ゲームパッド: 2組の4方向カーソルコントロールキー
* タッチパッド: 静電/抵抗膜式デュアルタッチパッド、手書き入力モードをサポート
** アルプス電気 [[Touch Pad/Tablet|静電/抵抗膜式デュアルタッチパッド]]
* オーディオ: AC’97互換オーディオサブシステム、内蔵ステレオスピーカーとアンプ、内蔵モノラルマイク、外部ヘッドホンとマイク端子
** [http://www.analog.com/en/prod/0%2C2877%2CAD1888%2C00.html Analog Devices AD1888]および[http://www.analog.com/ Analog Devices SSM2302] 音声増幅用
[[Image:AP1 15.jpg|thumb|100px|キーボード詳細]]
* カメラ: 内蔵カラービデオカメラ、30 FPSで解像度 640 x 480、マイクとカメラの記録状態を表示する独立した(ソフトウェアから制御できない)表示装置、カメラとデバイスドライバは、教育用アプリケーションのための光センサとして使用できるようにするためにAGC(自動利得制御)と自動カラーバランスの無効化をサポート
** [http://www.ovt.com/products/part_detail.asp?id=53 Omnivision OV7670]
* [[Wireless| 無線ネットワーク]]: 802.11b/g (2.4GHz)統合インタフェース、802.11s (メッシュ)ネットワークをサポート; ダイバシティ受信をサポートした2つの調整可能な回転式アンテナ、CPUの電源が切れていてもメッシュの運用は可能
** Marvell [[Libertas]]無線チップセット, [[88W8388]]コントローラと [[88W8015]]ラジオ
* 状態インジケータ: 電源、電池、WiFi(2)、マイク使用中、カメラ使用中、蓋が開いていても閉じていても確認可能

{{ Translated text |
* Keyboard: 80+ keys, 1.0mm stroke; sealed rubber-membrane key-switch assembly;
** [[OLPC_Keyboard_layouts|Keyboard Layouts]]
** [[OLPC_Keyboard_layouts|Keyboard Layouts]]
** レイアウト画像 (for B3)- [[:Image:Keyboard_english.jpg|US International]], [[:Image:Keyboard thai.jpg|Thai]], [[:Image:Keyboard arabic.jpg|Arabic]], [[:Image:Keyboard spanish.jpg|Spanish]], [[:Image:Keyboard portuguese.jpg|Brazilian Portuguese]], [[:Image:Keyboard west africa.jpg|Nigeria]], [[:Image:Keyboard urdu.jpg|Urdu]], [[:Image:Keyboard azerty.jpg|French]]
** Layout pictures: [[:Image:Keyboard english.png|English]], [[:Image:Keyboard arabic.png|Arabic]], [[:Image:Keyboard thai.png|Thai]], [[:Image:NG-MP-alt.png|West African (Nigeria)]], [[:Image:BR-MP-v1.png|Portuguese]], [[:Image:ES-MP-v1.png|Spanish]], [[:Image:Ethiopic-B3.png|Amharic]], [[:Image:Rwanda-B3.png|French (not final)]], [[:Image:Urdu-MP.png|Urdu]], [[:Image:RU-MP-v1.png|Cyrillic]], [[:Image:TR-MP-v1.png|Turkish (not final)]], [[:Image:NP-MP-v1.png|Nepali]], [[:Image:MO-MP-v1.png|Mongolian]], [[:Image:KA-MP-v1.png|Kazakh]], [[:Image:MR-MP-v2.png|Devanagari]], [[:Image:UZ-MP.png|Uzbek]], [[:Image:PS-MP.png|Pashto]], [[:Image:AF-MP.png|Dari]]
* カーソルキー: five-key cursor-control pad; 4方向キー+エンターキー
* Gamepad: Two sets of four-direction cursor-control keys;
* タッチパッド: アルプス電気 [[Touch Pad/Tablet|Dual capacitance/resistive touchpad]]; supports written-input mode
* Touchpad: Dual capacitance/resistive touchpad; supports written-input mode;
** ALPS Electric [[Touch Pad/Tablet|Dual capacitance/resistive touchpad]];
* オーディオ: [http://www.analog.com/en/prod/0%2C2877%2CAD1888%2C00.html Analog Devices AD1888], AC97-compatible audio codec; ステレオ, with dual internal speakers; monophonic, with internal microphone and using the [http://www.analog.com/ Analog Devices SSM2302] for audio amplification
* Audio: AC’97 compatible audio subsystem; Internal stereo speakers and amplifier; internal monophonic microphone; jacks for external headphones or microphone;
** [http://www.analog.com/en/prod/0%2C2877%2CAD1888%2C00.html Analog Devices AD1888] and [http://www.analog.com/ Analog Devices SSM2302] for audio amplification
[[Image:AP1 15.jpg|thumb|100px|Keyboard detail]]
[[Image:AP1 15.jpg|thumb|100px|Keyboard detail]]
* Camera: integrated color video camera; 640 x 480 resolution at 30 FPS; independent (and undefeatable by software) display of microphone and camera recording status; the camera and device driver support disabling AGC and automatic color balancing, to enable its use as a photometric sensor for educational applications;
* [[Wireless]]: Marvell [[Libertas]] 88W8388+88W8015, 802.11b/g 互換; dual adjustable, rotating coaxial antennas; supports diversity reception
** [http://www.ovt.com/products/part_detail.asp?id=53 Omnivision OV7670]
* Status indicators: 電源, バッテリ, WiFi; visible lid open or closed
* [[Wireless| Wireless Networking]]: Integrated 802.11b/g (2.4GHz) interface; 802.11s (Mesh) networking supported; dual adjustable, rotating antennas support diversity reception; capable of mesh operation when CPU is powered down;
* ビデオカメラ: 640x480 解像度, 30FPS, [http://www.ovt.com/products/part_detail.asp?id=53 Omnivision OV7670]. The camera and device driver support disabling AGC and automatic color balancing, to enable its use as a photometric sensor for educational applications.
** Marvell [[Libertas]] wireless chipset, [[88W8388]] controller and [[88W8015]] radio
* Independent and undefeatable by software display of microphone and camera recording status
* Status indicators: Power, battery, and WiFi (2), visible with lid open or closed; Microphone In-Use, and Camera In-Use, visible when lid is open.
| display = block}} <!-- change to 'display = none' to hide english text -->

===外部コネクタ===
* DC電源: 6mm (1.65mm センターピン)コネクタ; 11から18Vの入力で使用可能、–32から40Vの入力に耐える、電力の制限は15Wまで
* ヘッドホン出力: 標準 3.5mm 3ピン スイッチ付きステレオ音声ジャック
* マイク入力: 標準 3.5mm 2ピン スイッチ付きモノラルマイクジャック、2V DC バイアスを選択可能、センサ入力モードを選択可能(DCあるいはAC結合)
* USB: 3つのタイプA USB 2.0コネクタ、1Aまでの電源供給(合計)
* フラッシュ拡張: [[SD]]カードスロット

[[Image:Rotate-1.jpg|thumb|コネクタ]]


{{ Translated text |
{{ Translated text |
* DC power: 6mm (1.65mm center pin) connector; 11 to 18 V input usable, –32 to 40V input tolerated; power draw limited to 15 W;
* Headphone output: standard 3.5mm 3-pin switched stereo audio jack;
* Microphone input: standard 3.5mm 2-pin switched mono microphone jack; selectable 2V DC bias; selectable sensor-input mode (DC or AC coupled);
* USB: Three Type-A USB 2.0 connectors; Up to 1A power supplied (total);
* Flash Expansion: [[SD]] Card slot.
| display = block}} <!-- change to 'display = none' to hide english text -->
| display = block}} <!-- change to 'display = none' to hide english text -->


===バッテリ===
''外部コネクタ:''
* パックタイプ: 2または4セル LiFePO4、あるいは5セル NiMH、およそ6V 直列接続(変更予定)
* 電源: 2-pin DC-input, 10 to 20 V usable input. Input can safely handle -40 to 39 V. input. Exceeding this range will likely blow a one-time fuse.
* 容量: 16.5 WH (NIMH), 22 WH (LiFeP);
* ライン出力: Standard 3.5mm 3-pin switched stereo audio jack
* 完全密閉「ハード」ケース、取り外し可能
* マイク: Standard 3.5mm 2-pin switched mono microphone jack; selectable input mode:
* パックに統合された電子部品:
** Sensor, DC w. 2.5 V (3K ohm impedance) bias voltage for switches, resistive sensors, etc.
** 識別;
** Sensor, DC w. no bias voltage for measuring voltages (0 - 3 V)
** 充電と容量モニタチップ([[Media:DS2756.pdf|Maxim DS2756 データシート]]);
** 外部マイク, AC w. bias voltage
** バッテリ保護のためのカットオフスイッチ付きの温度と過電流センサ
* Expansion: 3 Type-A USB-2.0 コネクタ; MMC/SD カードスロット
* 最大電力: 1 A (トータル)
* 最大2,000回の充放サイクル(新品時の50%容量)
* [[Power Management|パワーマネジメント]] が重要となる[[Image:Bottomdrawing.jpg|thumb|バッテリ]]
[[Image:Rotate-1.jpg|thumb|Connectors]]


{{ Translated text |
{{ Translated text |
* Pack type: 2 or 4 cells LiFePO4; or 5 cells NiMH, approx. 6V series configuration (subject to change);
* Capacity: 16.5 Watt-hours (NIMH), 22 Watt-hours (LiFeP);
* Fully-enclosed “hard” case; user removable;
* Electronics integrated with the pack provide:
** Identification;
** Battery charge and capacity monitoring chip ([[Media:DS2756.pdf|Maxim DS2756 data sheet]]);
** Thermal and over-current sensors along with cutoff switch to protect battery;
* Minimum 2,000 charge/discharge cycles (to 50% capacity of new).
* [[Power Management]] will be critical
| display = block}} <!-- change to 'display = none' to hide english text -->
| display = block}} <!-- change to 'display = none' to hide english text -->


===BIOS/ローダ===
''バッテリ:''
* [[Open Firmware]] (ハードウェアの初期化と高速リジュームを含む).
* Fully-enclosed “hard” case; user removable
{{ Translated text |
* Pack type: 4 Cells, 6V series configuration
* [[Open Firmware]] (including hardware initialization and fast resume).
* Two chemistries:
| display = block}} <!-- change to 'display = none' to hide english text -->
**NIMH, with a capacity of 16.5 Watt-hours
**LiFeP, with a capacity of 22 Watt-hours
* Electronics integrated with pack provide:
** Identification
** Battery charge and capacity information
** Thermal and over-current sensors along with cutoff switch to protect battery
* Cycle life: 最低 2,000回の充電/放電 (to 50% capacity of new, IIRC).
* [[Power Management]] will be critical
[[Image:Bottomdrawing.jpg|thumb|Battery]]


===Environmental specifications===
''BIOS/loader:''
* Temperature: UL certification planned to 45C in Q32007, pending 50C certification in mid-2008;
* [[Open Firmware]] が使われています。including hardware initialization and fast resume.
* Humidity: UL certification planned to IP42 (perhaps higher) when closed, the unit should seal well enough that children walking to and from school need not fear rainstorms and dust;
* Maximum altitude: –15m to 3048m (14.7 to 10.1 PSIA) (operating), –15m to 12192m (14.7 to 4.4 PSIA) (non-operating);
* Shock 125g, 2ms, half-sine (operating) 200g, 2ms, half-sine (non-operating);
* Random vibration: 0.75g zero-to-peak, 10Hz to 500Hz, 0.25 oct/min sweep rate (operating); 1.5g zero-to-peak, 10Hz to 500Hz, 0.5 oct/min sweep rate (nonoperating);
* 2mm plastic walls (1.3mm is typical for most systems).
{{ Translated text |
* Temperature: UL certification planned to 45C in Q32007, pending 50C certification in mid-2008;
* Humidity: UL certification planned to IP42 (perhaps higher) when closed, the unit should seal well enough that children walking to and from school need not fear rainstorms and dust;
* Maximum altitude: –15m to 3048m (14.7 to 10.1 PSIA) (operating), –15m to 12192m (14.7 to 4.4 PSIA) (non-operating);
* Shock 125g, 2ms, half-sine (operating) 200g, 2ms, half-sine (non-operating);
* Random vibration: 0.75g zero-to-peak, 10Hz to 500Hz, 0.25 oct/min sweep rate (operating); 1.5g zero-to-peak, 10Hz to 500Hz, 0.5 oct/min sweep rate (nonoperating);
* 2mm plastic walls (1.3mm is typical for most systems).
| display = block}} <!-- change to 'display = none' to hide english text -->


===Regulatory requirements===
''Environmental specifications:''
* The usual US and EU EMI/EMC (electromagnetic-interference and electromagnetic-compatibility) requirements will be met;
* Temperature: somewhere in between typical laptop requirements and Mil spec; exact values have not been settled
* The laptop meets IEC 60950-1, EN 60950-1, and CSA/UL 60950-1 specifications. It also complies with UL 1310 and UL 498. In order to guarantee the safety of children using the laptop, it passes ASTM F 963;
* Humidity: Similar attitude to temperature. When closed, the unit should seal well enough that children walking to and from school need not fear rainstorms or dust.
* The external power adapter complies with IEC, EN, and CSA/UL 60950-1;
* Altitude: -15m to 3048m (14.7 to 10.1 psia) (operating), -15m to 12192m (14.7 to 4.4 psia) (non-operating
* The removable battery pack complies with IEC, EN, and CSA/UL 60950-1 and UL 2054;
* Shock: 125g, 2ms, half-sine (operating) 200g, 2ms, half-sine (non-operating)
* RoHS (Restriction of Hazardous Substances Directive – EU) compliant.
* Random vibration: 0.75g zero-to-peak, 10Hz to 500Hz, 0.25 oct/min sweep rate (operating); 1.5g zero-to-peak, 10Hz to 500Hz, 0.5 oct/min sweep rate (nonoperating)
{{ Translated text |
* 2mm plastic walls (1.3mm is typical for most systems).
* The usual US and EU EMI/EMC (electromagnetic-interference and electromagnetic-compatibility) requirements will be met;

* The laptop meets IEC 60950-1, EN 60950-1, and CSA/UL 60950-1 specifications. It also complies with UL 1310 and UL 498. In order to guarantee the safety of children using the laptop, it passes ASTM F 963;
''Regulatory requirements:''
* The external power adapter complies with IEC, EN, and CSA/UL 60950-1;
* The usual US and EU EMI/EMC requirements will be met.
* The laptop and all OLPC-supplied accessories will be fully UL and is RoHS compliant.
* The removable battery pack complies with IEC, EN, and CSA/UL 60950-1 and UL 2054;
* RoHS (Restriction of Hazardous Substances Directive – EU) compliant.
| display = block}} <!-- change to 'display = none' to hide english text -->


{{ Translated text |
{{ Translated text |
| display = block}} <!-- change to 'display = none' to hide english text -->
| display = block}} <!-- change to 'display = none' to hide english text -->


{{Developers}}
==ラップトップ開発スケジュール==
===Support Hardware===


''Serial Adapter (for developers)''
The XO laptop hardware development schedule has two more test unit builds (Beta Test 3 and Beta Test 4), before a final test build (C Test 1) on the final production line and mass production. The Beta Test 3 build scheduled for early May will be the first one providing the processor and memory capabilities of the production version.
[[Image:serialadapter.jpg|thumb|Serial Adapter]]
* [[Serial_adapters|3.3V TTL to RS-232/USB Adapter]]


==Laptop Development Schedule==
{{ Translated text |
| display = block}} <!-- change to 'display = none' to hide english text -->


=== Pre-production Test Systems (CTest-1, or C1) ===
=== Mass Production Systems ===


Started November 2007.
This build is a very small number (200 or so) of laptops produced as a test of the manufacturing process on the main production line, and should happen in early fall 2007. A C1 laptop is hopefully identical to a production unit in all aspects...


=== ベータテスト 4 Systems (BTest-4, or B4) ===
=== Preproduction Test Systems (CTest-2, or C2) ===


Pre-build of 50 motherboards in October to test last minute [[B4_Suspend_ECR|changes]].
This build, scheduled for the middle of summer 2007, is the final chance to fix hardware and mechanical problems that were detected in the Beta Test 3 build of the XO. Only a small number (200 or so) of these will be built for testing, as the injection molds for the plastic case have to be taken offline and duplicated to prepare for mass production (the Beta Test mold set will be retired after duplication).


=== Preproduction Test Systems (CTest-1, or C1) ===
このビルドではラップトップに新しい機能は加えません。This build is planned merely to test solutions to problems detected in the BTest-3 laptops.


This build is of 300 laptops produced as a test of the manufacturing process on the main production line, and should happen starting August 6th, 2007. Slip resistance rubber feet will be added as will more easily replaceable bunny ears (just two screws per ear after bezel removal). The hinge stop that appeared in B3/B4 will be eliminated or reduced (this is used to the stop the display at perpendicular before it tilts back further). Bean texture will be applied to the exterior white parts and "satin" texture to the the rest of the laptop plastic parts. A C1 laptop will be nearly identical to the production unit ...
=== ベータテスト 3 Systems (BTest-3, or B3) ===


Preproduction Test Systems have a label under the battery that says '''C-TEST-SAMPLE'''.
This build, scheduled for May 2007, is the first to use an updated design for the laptop.

=== Beta Test 4 Systems (BTest-4, or B4) ===

This build which ran from June 20-25, 2007, was the final chance to fix hardware and mechanical problems that were detected in the Beta Test 3 build of the XO. 2000 units were built.

Texture was added to the upper handle bar, the hinge tilt was increased by 7 degrees, the hinge "squeak" was eliminated, the rabbit ears click in place when put in the "down" position", the slight camera vignetting seen in B3 was eliminated, and minor modifications were made to the motherboard.

Beta Test 4 Systems have a label under the battery that says '''B4-TEST-SAMPLE'''.

Beta Test 4 Systems work with current software releases. They may experience [[B4_Suspend_ECR|hardware problems with extensive suspend/resume or low battery]].

=== Beta Test 3 Systems (BTest-3, or B3) ===

This build—May 2007—is the first to use an updated design for the laptop.
It was the first build providing the processor and memory capabilities of the production version.
Noticeable improvements over BTest-2 include:
Noticeable improvements over BTest-2 include:
* 高速、低消費電力プロセッサにしました: the Geode LX-700
* A faster, lower power processor: the Geode LX-700
** 64 KB I/64 KB D of L1 Cache, 128 KB of L2 Cache (vs. 32 KB of L1 cache)
** 64 KB I/64 KB D of L1 Cache, 128 KB of L2 Cache (vs. 32 KB of L1 cache)
** プロセッサとメモリのクロックを速くしました (433/333 vs. 366/266)
** Faster processor and memory clock (433/333 vs. 366/266)
** 1.5 W typ. vs. 3 W typ.
** 1.5 W typ. vs. 3 W typ.
** Much better graphics processor, including support for rotated blits and depth conversion
** Much better graphics processor, including support for rotated blits and depth conversion
* メモリの増量: 256 MB of SDRAM (vs. 128 MB)
* More memory: 256 MB of SDRAM (vs. 128 MB)
* extra screws
* insert molded rubber ears for better robustness
* a smaller battery cavity to improve robustness, make the bumper lines cleared
* 10-20V input voltage tolerance.
* new bumper tooling to allow the bumpers to be made of polycarbonate (as opposed to PC/ABS) with 3mm thickness and ribbing to 1.8mm (was 2mm and 1.2mm respectively)
* colored XO on the back cover (400 different color combinations so kids can distinguish their laptops from each other
* A keyboard that is much better to type on
* Finally a touchpad that is much easier to use and much more responsive
* a steel plate inside the entire keyboard base to reduce the feeling of flimsiness
* a flipped USB connector so each side has the same way up for a USB key or device
* A new hinge design allows greater tilt of the screen
* A new hinge design allows greater tilt of the screen
* An improved case design (addressing strength)
* ケースのデザインが改良されました (addressing strength and water resistance)
A very small number of BTest-3 units (around a hundred) were built, all were used for hardware and low level software development.


Beta Test 3 Systems have a label under the battery that says '''B3-TEST-SAMPLE'''.
A very small number of BTest-3 units (around a hundred) will be built, all destined for hardware and low level software development.


Beta Test 3 Systems work with current software releases. They may experience [[B4_Suspend_ECR|hardware problems with extensive suspend/resume or low battery]].
=== ベータテスト 2 Systems (BTest-2, or B2) ===


=== Beta Test 2 Systems (BTest-2, or B2) ===
Approximately 2500 systems were built by Quanta and are being distributed. These are fully functional machines with CaFE ASICs, and reflect some, but not all of the learning and improvements from testing of BTest-1. Much more information about the BTest-2 systems can be found in the [[BTest-2 Release Notes]]. Some of the details of the hardware design are to support the [[OLPC Human Interface Guidelines]].

Approximately 2500 systems were built by Quanta and distributed. These are fully functional machines with CaFE ASICs, and reflect some, but not all of the learning and improvements from testing of BTest-1. Much more information about the BTest-2 systems can be found in the [[BTest-2 Release Notes]]. Some of the details of the hardware design are to support the [[OLPC Human Interface Guidelines]].


BTest-2 systems are almost identical visually with BTest-1. BTest-3 will have more substantial physical differences. An easy way to tell the difference between BTest-1 and BTest-2 is that BTest-1 keyboards have white lettering, and BTest-2 has black lettering.
BTest-2 systems are almost identical visually with BTest-1. BTest-3 will have more substantial physical differences. An easy way to tell the difference between BTest-1 and BTest-2 is that BTest-1 keyboards have white lettering, and BTest-2 has black lettering.


There are two flavors of B2. Beta Test '''2-1''' (B2-1) systems, which only have 128 MB of memory, have a label under the battery that says '''B2-TEST-SAMPLE''' and a label that says '''B2-#''', where # is one to 16. Beta Test '''2-2''' (B2-2) systems, which have 256MB of memory, have a label under the battery that says '''B2-7-ext'''.
=== ベータテスト 1 Systems (BTest-1) ===

Beta Test '''2-1''' laptops do not perform well with current software releases.

=== Beta Test 1 Systems (BTest-1) ===

Approximately 875 systems were built by Quanta in November 2006 and distributed. The BTest-1 systems were fully functional machines (compared to a BTest-2 system), but built before the custom integrated circuits were available. An Altera FPGA is used in place of the CaFE ASIC which is present in later builds, for NAND flash, camera, and SD interfaces. This FPGA has lower performance and consumes much more power than the CaFE ASIC does.Much more information about the BTest-1 systems can be found in the [[BTest-1 Release Notes]]. (Beta Test 1 Systems have a label under the battery that says '''B1-TEST-SAMPLE'''.)


BTest-1 and pre-BTest systems are no longer supported by our current software releases.
Approximately 875 systems were built by Quanta and were distributed. These are fully functional machines, but built before the rigorous testing that will now take place. Much more information about the BTest-1 systems can be found in the [[BTest-1 Release Notes]].


=== Pre-BTest boards ===
=== Pre-BTest boards ===


A small number of pre-BTest boards were built in preparation for building complete BTest systems. [[Btest_Boards|Developer information about B-test boards are here.]]
A small number of pre-BTest boards were built in preparation for building complete BTest systems. [[Btest_Boards|Developer information about B-test boards are here.]]


=== アルファテスト Prototype Electronics ===
=== Alpha Test Prototype Electronics ===


Power up of the first OLPC electronics prototype boards occurred April 15, 2006. Power and ground testing continued over the weekend, and formal debug and BIOS bring up started Monday, April 17, 2006 at Quanta Computer's labs in Taipei, Taiwan. By Wednesday, April 19, Linux was booting on the first generation prototypes.
Power up of the first OLPC electronics prototype boards occurred April 15, 2006. Power and ground testing continued over the weekend, and formal debug and BIOS bring up started Monday, April 17, 2006 at Quanta Computer's labs in Taipei, Taiwan. By Wednesday, April 19, Linux was booting on the first generation prototypes.
Line 216: Line 302:
* [[media:Proto-a-linux.jpg|Picture of Linux running with circuit board in the lab]]
* [[media:Proto-a-linux.jpg|Picture of Linux running with circuit board in the lab]]
* [[media:Proto-a-screen.jpg|Picture of the screen of Linux running on the OLPC circuit board; fittingly, it shows a Chinese desktop]]
* [[media:Proto-a-screen.jpg|Picture of the screen of Linux running on the OLPC circuit board; fittingly, it shows a Chinese desktop]]

ATest systems are no longer supported by our current software releases.

=== Software on the development systems ===

'''C2''':
* Everything works with the exception of a few items in Trac and any yet to be discovered bugs;

'''C1/B4/B3''':
* There may be occasional crashes (possibly made worse by suspend/resume) when the battery is running low. Above 25% of capacity, or plugged into a power adapter, you should be OK ([http://dev.laptop.org/ticket/1835]);
* There may be times when the WLAN (USB) hangs (possibly made worse by suspend/resume) ([http://dev.laptop.org/ticket/1752], [http://dev.laptop.org/ticket/4476]);
* Power cycling the DCON is liable to crash the laptop. This power cycling will occasionally happen in response to a DCON bug triggered by suspend/resume ([http://dev.laptop.org/ticket/4479]);
* Rare crashes may be caused by other sources during suspend/resume (Camera, SD card, clock settling time), some units (especially B3s) may be more sensitive than others ([http://dev.laptop.org/ticket/1835]);

'''B2''':
* All of the problems listed for C1/B4/B3 are present;
* The keyboard/touchpad may not be used to wakeup from a suspend/resume ([http://dev.laptop.org/ticket/895]);
* The DCON will glitch coming out of suspend/resume ([http://dev.laptop.org/ticket/947]);
* The camera will not work properly;

'''A''':
* A Test is no longer supported. Do not load D- or C-series firmware on A Test machines.


== See also ==
== See also ==
===[[Environmental Impact]]===
===[[Environmental Impact]]===
===[[Hardware]]===
===[[Hardware]]===
===[[Support]]===

The [[Media:CL1_Hdwe_Design_Spec.pdf|definitive laptop specification]] (only available in PDF format).


Formerly part of this page:
Formerly part of this page:
===[[Hardware uniqueness]]===
===[[Hardware uniqueness]]===
===[[Hardware design]]===
===[[Hardware design]]===
===[[Hardware modification]]===


=School Server Hardware=
=School Server Hardware=
Line 233: Line 345:
==XS==
==XS==


This will be the school server built for OLPC by Quanta. It is still in the very early stages of design, but should reach early production volumes in late fall. See the [[XS_Server_Specification#XS_Specifications|specification]].
This will be the school server designed by OLPC. It is mostly designed, but currently on hold as we reconsider manufacturers, and should reach early production volumes in spring 2008. See the [[XS_Server_Specification#XS_Specifications|specification]].


==XSX==
==XSX==
[[Image:XSX-side.jpg|thumb|right|300px|XSX limited-production prototype school server. The actual XS school servers won't look anything like this.]]

This is a prototype school server, built for early school trials in country. It will be integrated from off-the-shelf components, and will be overpowered compared to a production school server in order to simplify [[Trial1_Server_Software|early demands for system software]]. See the [[XS_Server_Specification#XSX_Specifications|specification]] and the [[XSX_Server_Implementation|implementation]].
This is a prototype school server, built for early school trials in country. It will be integrated from off-the-shelf components, and will be overpowered compared to a production school server in order to simplify [[Trial1_Server_Software|early demands for system software]]. See the [[XS_Server_Specification#XSX_Specifications|specification]] and the [[XSX_Server_Implementation|implementation]].

Revision as of 05:52, 12 December 2007

  このページは、OLPCチームによってチェックされています。
  翻訳された Hardware specification 原文  
  deutsch | english | español | français | italian | 日本語 | 한글 | português | русский indonesia   +/- 変更  
This is an on-going translation

ラップトップ ハードウェア

XOラップトップはOne Laptop Per Childの中心となるものです。3年に渡る開発の後に量産が始まりつつあり、数千のベータテスト(B2)装置が開発者によって使われ、参加国の学校でテストされています。技術の進歩に追従するためにラップトップの設計の最終的な小変更が行われました。

The XO laptop is the center of One Laptop Per Child. After three years of development, it is approaching mass production, with several thousand Beta test (B2) units deployed to developers and for testing in schools in participating countries. The laptop design has just undergone a final minor update to keep up with advancements in technology.

仕様

Drawing75c1.jpg
XOの寸法入り図面。拡大するにはクリック

正式なラップトップの仕様はPDFでのみ提供されます。このページはできる限り正確にその情報を反映するようにします。

The definitive laptop specification is only available in PDF format. This page attempts to accurately reflect that information.

寸法

  • おおよその寸法: 242mm × 228mm × 30mm (詳細な寸法は右の図面を見てください)
  • おおよその重量:
    • LiFePバッテリ付のXO: 1.45kg (~3.20lbs)
    • NiMHバッテリ付のXO: 1.58kg (~3.48lbs)
  • 構成: 回転軸付きコンバーチブル・ラップトップ、反転可能なディスプレイ、防塵および防滴筐体、ファンなし
  • Approximate dimensions: 242mm × 228mm × 32mm (see drawing to the right for detailed dimensions)
  • Approximate weight:
    • XO laptop with LiFeP battery: 1.45KG (~3.20lbs);
    • XO laptop with NiMH battery: 1.58KG (~3.48lbs);
  • Configuration: Convertible laptop with pivoting, reversible display; dirt- and moisture-resistant system enclosure; no fan.

核となる電子部品

  • CPU: x86互換プロセッサ、64KBのL1とIおよびDキャッシュ、最低128KBのL2キャッシュ
  • CPUクロックスピード: 433 MHz
  • ISA互換: MMXと3DNow!のx86拡張命令セットをサポート
    • Athlon命令セット(MMXと3DNow!拡張を含む)に加えてGeode専用命令セット
  • 周辺チップ: CPUに統合されたPCIとメモリインタフェース
  • グラフィックコントローラ: CPUに統合、統合メモリアーキテクチャ
  • 組込コントローラ: ENE KB3700またはENE KB3700B
  • DRAMメモリ: 256 MB ダイナミックRAM、データレート: デュアルDDR333-166MHz
  • BIOS: 1024KB SPIインタフェース フラッシュROM
  • オペレーティングシステムをロードするためのOpen Firmware
  • 大容量記憶装置: 1024 MB SLC NANDフラッシュ、高速フラッシュコントローラ
  • デバイス: 回転メディアなし.
  • CAFE ASIC (カメラとフラッシュイネーブラチップにより、高性能カメラ、NANDフラッシュ、SDインタフェースを提供)、Marvell 88ALP01: CAFE仕様
Prototype-A Motherboard
  • CPU: x86-compatible processor with 64KB each L1 I and D cache; at least 128KB L2 cache;
  • CPU clock speed: 433 Mhz;
  • ISA compatibility: Support for both the MMX and 3DNow! x86 instruction-set extensions;
    • Athlon instruction set (including MMX and 3DNow! Enhanced) with additional Geode-specific instructions
  • Companion chips: PCI and memory interface integrated with CPU;
  • Graphics controller: Integrated with CPU; unified memory architecture;
  • Embedded controller: ENE KB3700 or ENE KB3700B;
  • DRAM memory: 256 MiB dynamic RAM; data rate: dual-DDR333-166Mhz;
  • BIOS: 1024KiB SPI-interface flash ROM;
  • Open Firmware used to load the operating system;
  • Mass storage: 1024 MiB SLC NAND flash, high-speed flash controller;
  • Drives: No rotating media.
  • CAFE ASIC (camera- and flash-enabler chip provides high-performance camera, NAND FLASH and SD interfaces); Marvell 88ALP01: CAFE Specification

ディスプレイ

  • 液晶ディスプレイ: 7.5” デュアルモードTFTディスプレイ
  • 表示エリア: 152.4 mm × 114.3 mm
  • 2つのモード: (1)グレイスケール(白黒)反射モード(屋外での使用時に太陽光で読み取れる) (2)カラーバックライトモード(屋内で使用)
    • 反射モード: 高解像度(200 DPI)、1200(H) × 900(V) グレイスケールピクセル、消費電力 0.1–0.2W
    • バックライトモード: 高解像度ディスプレイの組込みサブピクセルサンプリングにより、およそ800(H) × 600(V) カラーピクセル、消費電力 0.2–1.0W
  • メモリ内蔵ディスプレイコントローラチップ(DCON)は、プロセッサがサスペンドしていても、表示を可能にします。また、DCONはディスプレイのためにデータを初期化します。
  • この液晶ディスプレイは私たちの究極の低消費電力技術に基づきます。このXOは、CPUとマザーボードの大部分が、ユーザが気付かないほど定期的に高速で電源を断続していても使用できます。この方法により、大きく電力を節約することができます(たとえば、使用していないときに(たとえ数秒間でも)、電源管理機能がマザーボードを切っても、ディスプレイは表示されたままです)。
注記: Webブラウザの画像は、非常に荒く[800 × 600]、ブラウザのウィンドウを埋められるように現在拡大されています。
OLPCの試作ディスプレイ上で動作するeToys (Squeak)
  • Liquid-crystal display: 7.5” dual-mode TFT display;
  • Viewing area: 152.4 mm × 114.3 mm;
  • Two modes: (1) grayscale (B&W) reflective mode (for outdoor use—sunlight-readable); and (2) color backlight Mode (for indoor use);
    • reflective mode: high-resolution (200 DPI), 1200(H) × 900(V) grayscale pixels, power consumption 0.1–0.2Watts;
    • backlight mode: built in sub-pixel sampling of the high-resolution display results in approximately 800(H) × 600(V) color pixels, power consumption 0.2–1.0Watts;
  • The display-controller chip (DCON) with memory that enables the display to remain live with the processor suspended. The DCON also formats data for the display.
  • This Liquid-crystal display is the basis of our extremely low power architecture. The XO is usable while the CPU and much of the motherboard is regularly turned off (and on) so quickly that it's imperceptible to the user. Huge power savings are harvested in this way (e.g. by turning stuff on the motherboard off when it's not being used (if even for a few seconds), while keeping the display on).
Note: web browser images are currently scaled up so that an image of very roughly [800 × 600] fills up the browser window.

統合された周辺機器

キーボード詳細
  • カメラ: 内蔵カラービデオカメラ、30 FPSで解像度 640 x 480、マイクとカメラの記録状態を表示する独立した(ソフトウェアから制御できない)表示装置、カメラとデバイスドライバは、教育用アプリケーションのための光センサとして使用できるようにするためにAGC(自動利得制御)と自動カラーバランスの無効化をサポート
  • 無線ネットワーク: 802.11b/g (2.4GHz)統合インタフェース、802.11s (メッシュ)ネットワークをサポート; ダイバシティ受信をサポートした2つの調整可能な回転式アンテナ、CPUの電源が切れていてもメッシュの運用は可能
  • 状態インジケータ: 電源、電池、WiFi(2)、マイク使用中、カメラ使用中、蓋が開いていても閉じていても確認可能
{{{1}}}

外部コネクタ

  • DC電源: 6mm (1.65mm センターピン)コネクタ; 11から18Vの入力で使用可能、–32から40Vの入力に耐える、電力の制限は15Wまで
  • ヘッドホン出力: 標準 3.5mm 3ピン スイッチ付きステレオ音声ジャック
  • マイク入力: 標準 3.5mm 2ピン スイッチ付きモノラルマイクジャック、2V DC バイアスを選択可能、センサ入力モードを選択可能(DCあるいはAC結合)
  • USB: 3つのタイプA USB 2.0コネクタ、1Aまでの電源供給(合計)
  • フラッシュ拡張: SDカードスロット
コネクタ
  • DC power: 6mm (1.65mm center pin) connector; 11 to 18 V input usable, –32 to 40V input tolerated; power draw limited to 15 W;
  • Headphone output: standard 3.5mm 3-pin switched stereo audio jack;
  • Microphone input: standard 3.5mm 2-pin switched mono microphone jack; selectable 2V DC bias; selectable sensor-input mode (DC or AC coupled);
  • USB: Three Type-A USB 2.0 connectors; Up to 1A power supplied (total);
  • Flash Expansion: SD Card slot.

バッテリ

  • パックタイプ: 2または4セル LiFePO4、あるいは5セル NiMH、およそ6V 直列接続(変更予定)
  • 容量: 16.5 WH (NIMH), 22 WH (LiFeP);
  • 完全密閉「ハード」ケース、取り外し可能
  • パックに統合された電子部品:
    • 識別;
    • 充電と容量モニタチップ(Maxim DS2756 データシート);
    • バッテリ保護のためのカットオフスイッチ付きの温度と過電流センサ
  • 最大2,000回の充放電サイクル(新品時の50%容量)
  • パワーマネジメント が重要となる
    バッテリ
  • Pack type: 2 or 4 cells LiFePO4; or 5 cells NiMH, approx. 6V series configuration (subject to change);
  • Capacity: 16.5 Watt-hours (NIMH), 22 Watt-hours (LiFeP);
  • Fully-enclosed “hard” case; user removable;
  • Electronics integrated with the pack provide:
    • Identification;
    • Battery charge and capacity monitoring chip (Maxim DS2756 data sheet);
    • Thermal and over-current sensors along with cutoff switch to protect battery;
  • Minimum 2,000 charge/discharge cycles (to 50% capacity of new).
  • Power Management will be critical

BIOS/ローダ

  • Open Firmware (ハードウェアの初期化と高速リジュームを含む).
  • Open Firmware (including hardware initialization and fast resume).

Environmental specifications

  • Temperature: UL certification planned to 45C in Q32007, pending 50C certification in mid-2008;
  • Humidity: UL certification planned to IP42 (perhaps higher) when closed, the unit should seal well enough that children walking to and from school need not fear rainstorms and dust;
  • Maximum altitude: –15m to 3048m (14.7 to 10.1 PSIA) (operating), –15m to 12192m (14.7 to 4.4 PSIA) (non-operating);
  • Shock 125g, 2ms, half-sine (operating) 200g, 2ms, half-sine (non-operating);
  • Random vibration: 0.75g zero-to-peak, 10Hz to 500Hz, 0.25 oct/min sweep rate (operating); 1.5g zero-to-peak, 10Hz to 500Hz, 0.5 oct/min sweep rate (nonoperating);
  • 2mm plastic walls (1.3mm is typical for most systems).
  • Temperature: UL certification planned to 45C in Q32007, pending 50C certification in mid-2008;
  • Humidity: UL certification planned to IP42 (perhaps higher) when closed, the unit should seal well enough that children walking to and from school need not fear rainstorms and dust;
  • Maximum altitude: –15m to 3048m (14.7 to 10.1 PSIA) (operating), –15m to 12192m (14.7 to 4.4 PSIA) (non-operating);
  • Shock 125g, 2ms, half-sine (operating) 200g, 2ms, half-sine (non-operating);
  • Random vibration: 0.75g zero-to-peak, 10Hz to 500Hz, 0.25 oct/min sweep rate (operating); 1.5g zero-to-peak, 10Hz to 500Hz, 0.5 oct/min sweep rate (nonoperating);
  • 2mm plastic walls (1.3mm is typical for most systems).

Regulatory requirements

  • The usual US and EU EMI/EMC (electromagnetic-interference and electromagnetic-compatibility) requirements will be met;
  • The laptop meets IEC 60950-1, EN 60950-1, and CSA/UL 60950-1 specifications. It also complies with UL 1310 and UL 498. In order to guarantee the safety of children using the laptop, it passes ASTM F 963;
  • The external power adapter complies with IEC, EN, and CSA/UL 60950-1;
  • The removable battery pack complies with IEC, EN, and CSA/UL 60950-1 and UL 2054;
  • RoHS (Restriction of Hazardous Substances Directive – EU) compliant.
  • The usual US and EU EMI/EMC (electromagnetic-interference and electromagnetic-compatibility) requirements will be met;
  • The laptop meets IEC 60950-1, EN 60950-1, and CSA/UL 60950-1 specifications. It also complies with UL 1310 and UL 498. In order to guarantee the safety of children using the laptop, it passes ASTM F 963;
  • The external power adapter complies with IEC, EN, and CSA/UL 60950-1;
  • The removable battery pack complies with IEC, EN, and CSA/UL 60950-1 and UL 2054;
  • RoHS (Restriction of Hazardous Substances Directive – EU) compliant.


Support Hardware

Serial Adapter (for developers)

Serial Adapter

Laptop Development Schedule

Mass Production Systems

Started November 2007.

Preproduction Test Systems (CTest-2, or C2)

Pre-build of 50 motherboards in October to test last minute changes.

Preproduction Test Systems (CTest-1, or C1)

This build is of 300 laptops produced as a test of the manufacturing process on the main production line, and should happen starting August 6th, 2007. Slip resistance rubber feet will be added as will more easily replaceable bunny ears (just two screws per ear after bezel removal). The hinge stop that appeared in B3/B4 will be eliminated or reduced (this is used to the stop the display at perpendicular before it tilts back further). Bean texture will be applied to the exterior white parts and "satin" texture to the the rest of the laptop plastic parts. A C1 laptop will be nearly identical to the production unit ...

Preproduction Test Systems have a label under the battery that says C-TEST-SAMPLE.

Beta Test 4 Systems (BTest-4, or B4)

This build which ran from June 20-25, 2007, was the final chance to fix hardware and mechanical problems that were detected in the Beta Test 3 build of the XO. 2000 units were built.

Texture was added to the upper handle bar, the hinge tilt was increased by 7 degrees, the hinge "squeak" was eliminated, the rabbit ears click in place when put in the "down" position", the slight camera vignetting seen in B3 was eliminated, and minor modifications were made to the motherboard.

Beta Test 4 Systems have a label under the battery that says B4-TEST-SAMPLE.

Beta Test 4 Systems work with current software releases. They may experience hardware problems with extensive suspend/resume or low battery.

Beta Test 3 Systems (BTest-3, or B3)

This build—May 2007—is the first to use an updated design for the laptop. It was the first build providing the processor and memory capabilities of the production version. Noticeable improvements over BTest-2 include:

  • A faster, lower power processor: the Geode LX-700
    • 64 KB I/64 KB D of L1 Cache, 128 KB of L2 Cache (vs. 32 KB of L1 cache)
    • Faster processor and memory clock (433/333 vs. 366/266)
    • 1.5 W typ. vs. 3 W typ.
    • Much better graphics processor, including support for rotated blits and depth conversion
  • More memory: 256 MB of SDRAM (vs. 128 MB)
  • extra screws
  • insert molded rubber ears for better robustness
  • a smaller battery cavity to improve robustness, make the bumper lines cleared
  • 10-20V input voltage tolerance.
  • new bumper tooling to allow the bumpers to be made of polycarbonate (as opposed to PC/ABS) with 3mm thickness and ribbing to 1.8mm (was 2mm and 1.2mm respectively)
  • colored XO on the back cover (400 different color combinations so kids can distinguish their laptops from each other
  • A keyboard that is much better to type on
  • Finally a touchpad that is much easier to use and much more responsive
  • a steel plate inside the entire keyboard base to reduce the feeling of flimsiness
  • a flipped USB connector so each side has the same way up for a USB key or device
  • A new hinge design allows greater tilt of the screen
  • An improved case design (addressing strength)

A very small number of BTest-3 units (around a hundred) were built, all were used for hardware and low level software development.

Beta Test 3 Systems have a label under the battery that says B3-TEST-SAMPLE.

Beta Test 3 Systems work with current software releases. They may experience hardware problems with extensive suspend/resume or low battery.

Beta Test 2 Systems (BTest-2, or B2)

Approximately 2500 systems were built by Quanta and distributed. These are fully functional machines with CaFE ASICs, and reflect some, but not all of the learning and improvements from testing of BTest-1. Much more information about the BTest-2 systems can be found in the BTest-2 Release Notes. Some of the details of the hardware design are to support the OLPC Human Interface Guidelines.

BTest-2 systems are almost identical visually with BTest-1. BTest-3 will have more substantial physical differences. An easy way to tell the difference between BTest-1 and BTest-2 is that BTest-1 keyboards have white lettering, and BTest-2 has black lettering.

There are two flavors of B2. Beta Test 2-1 (B2-1) systems, which only have 128 MB of memory, have a label under the battery that says B2-TEST-SAMPLE and a label that says B2-#, where # is one to 16. Beta Test 2-2 (B2-2) systems, which have 256MB of memory, have a label under the battery that says B2-7-ext.

Beta Test 2-1 laptops do not perform well with current software releases.

Beta Test 1 Systems (BTest-1)

Approximately 875 systems were built by Quanta in November 2006 and distributed. The BTest-1 systems were fully functional machines (compared to a BTest-2 system), but built before the custom integrated circuits were available. An Altera FPGA is used in place of the CaFE ASIC which is present in later builds, for NAND flash, camera, and SD interfaces. This FPGA has lower performance and consumes much more power than the CaFE ASIC does.Much more information about the BTest-1 systems can be found in the BTest-1 Release Notes. (Beta Test 1 Systems have a label under the battery that says B1-TEST-SAMPLE.)

BTest-1 and pre-BTest systems are no longer supported by our current software releases.

Pre-BTest boards

A small number of pre-BTest boards were built in preparation for building complete BTest systems. Developer information about B-test boards are here.

Alpha Test Prototype Electronics

Power up of the first OLPC electronics prototype boards occurred April 15, 2006. Power and ground testing continued over the weekend, and formal debug and BIOS bring up started Monday, April 17, 2006 at Quanta Computer's labs in Taipei, Taiwan. By Wednesday, April 19, Linux was booting on the first generation prototypes.

Photographs:

ATest systems are no longer supported by our current software releases.

Software on the development systems

C2:

  • Everything works with the exception of a few items in Trac and any yet to be discovered bugs;

C1/B4/B3:

  • There may be occasional crashes (possibly made worse by suspend/resume) when the battery is running low. Above 25% of capacity, or plugged into a power adapter, you should be OK ([1]);
  • There may be times when the WLAN (USB) hangs (possibly made worse by suspend/resume) ([2], [3]);
  • Power cycling the DCON is liable to crash the laptop. This power cycling will occasionally happen in response to a DCON bug triggered by suspend/resume ([4]);
  • Rare crashes may be caused by other sources during suspend/resume (Camera, SD card, clock settling time), some units (especially B3s) may be more sensitive than others ([5]);

B2:

  • All of the problems listed for C1/B4/B3 are present;
  • The keyboard/touchpad may not be used to wakeup from a suspend/resume ([6]);
  • The DCON will glitch coming out of suspend/resume ([7]);
  • The camera will not work properly;

A:

  • A Test is no longer supported. Do not load D- or C-series firmware on A Test machines.

See also

Environmental Impact

Hardware

Support

The definitive laptop specification (only available in PDF format).

Formerly part of this page:

Hardware uniqueness

Hardware design

Hardware modification

School Server Hardware

While the laptop is rightfully at the center of OLPC, a valuable peripheral is the school server. OLPC will be building and distributing school servers along with the laptops, to extend the storage and computation provided by each laptop, as well as providing a local library and a mesh portal to the Internet.

Unlike the laptop, the school server is more of a collection of services than a hardware platform. In a manner identical to the laptop, OLPC will collaborate with manufacturing partners to provide a cost-efficient hardware platform for running the recommended software. Unlike the laptop, the manufacturing collaboration will not be exclusive. Individual countries will be free (even encouraged) to design and manufacture their own school servers running derivatives of the OLPC school server software.

XS

This will be the school server designed by OLPC. It is mostly designed, but currently on hold as we reconsider manufacturers, and should reach early production volumes in spring 2008. See the specification.

XSX

XSX limited-production prototype school server. The actual XS school servers won't look anything like this.

This is a prototype school server, built for early school trials in country. It will be integrated from off-the-shelf components, and will be overpowered compared to a production school server in order to simplify early demands for system software. See the specification and the implementation.