2. 计算机
  3. A memory--memory, machine instruction for a certain machine has the following format. (Such an instruction is similar to a regis

A memory--memory, machine instruction for a certain machine has the following format. (Such an instruction is similar to a regis

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问题 A memory--memory, machine instruction for a certain machine has the following format. (Such an instruction is similar to a register—register instruction except that the operands are displaced addresses in memory.)         

Which of the following could be an assembly language instruction that would be translated into a memory—to—memory instruction for this machine(     ).
选项 A、ADD 10(R1) ,20(R2)
B、ADD(10R1), (20R2)
C、ADD R1,10(R2),20
D、ADD R1,10,20(R2)
答案A
解析
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原NCRE全国计算机四级

NCRE全国计算机四级

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