= 電腦無線接收單元(WSU)教育訓練課程筆記 =
 * /sbin/init -> insert sh to debug in initrd stage
 * HAL(Hardware Absteract Layer) -> Using this layer to contorl Harware
 * use event mechanism to replace polling
 * use qemu to test kernel & initrd(/sbin/init, ...)
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= Reference =
 * http://sensor.nchc.org.tw:8080
 * http://sensor.nchc.org.tw/~jazz/MiTAC/