OLPC XO-4のこと(続き)
XO-4 is designed around the Marvell PXA2128 system on a chip.
- CPU: dual Marvell PJ4 ARM cores;
- CPU clock speed: 1 GHz (superscalar and out-of-order instruction execution);
- ARM instruction set compatible (including Thumb-2 and Wireless MMX2);
- ARMv7 architecture compatible;
- 32 KB L1 I-cache and 32 KB L1 D-cache per processor, shared 512KB L2 cache;
- The PXA2128 includes hardware video encode/decode, a GC2000 3D graphics engine, display controller, USB, SDIO, and other system interface and management functions
- Embedded Controller: ENE IO3790
- DRAM memory: 1GB or 2GB DDR3 dynamic RAM;
- Mass storage: 4 GiB or 8GiB NAND flash in an eMMC device soldered to the motherboard.
- an internal microSD card slot for repair/replacement -- requires installing the microSD slot;
- externally accessible full-size SD card slot;
- No rotating media.
MarvellのPXAシリーズってことはStrongARMの後継ですね。Intel由来のチップが載るとはなんたる歴史の皮肉。
シェルはAndroidとXのデュアルブートみたいですね。SugarとGnomeが使えると書かれてあります。
802.11sの表示がないのがちょっと不安ですが、教室内で使う分には11b/gで十分でしょうね。11sは電池食いますし。
