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立即数寻址指令长度是多长?立即数一次能加载多长?



MOV指令是双操作数指令,但是双操作数指令的格式为操作码(4bit),源(4bit),AD(1bit),BW(1bit),AS(1bit),目的(4bit)。

如果是MOV  #1000H  R4这样的指令,那么又是多长?立即数已经有16位长了。