最后但并非最不重要的一条指令就是xsl： if，它只在其测试成功的情况下才会执行。

Last but not least, the XSL: if instruction executes only if its test succeeds.

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最后，它完成必要的操作来执行指令。

Finally, it performs the operations necessary to execute the instruction.

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指令译码器将编码指令信号进行译码，最后由驱动电路来驱动执行电路实现各种指令的操作。

Encoding instruction decoder for decoding command signals, and finally by the drive circuit to drive the implementation of circuit operation to achieve a variety of commands.

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