本周前期，美国海军宣布其四艘REMUS 100无人水下航行器执行作业过程中脱离雷达并停止回复指令。

Earlier this week, the US Navy announced that four of their " REMUS 100" unmanned underwater vehicles sailed off-radar and stopped responding to commands.

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前端总线的执行指令通过5个方面来完成：判断，请求，探听，回复和数据。

FSB transactions go through 5 phases: arbitration, request, snoop, response, and data.

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控制板收到的指令通过回复的短信来确认通过。

Each command received by the panel is acknowledged via return SMS message.

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