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For a computer based on 3-address instruction formats, each address field is used to specify which of the following

S1: A memory operand

S2: A processor register

S3: An immediate constant data


Which of the following statements are correct?


a) Either S1 or S2

b) Either S2 or S3

c) Only S2 or S3

d) All of S1, S2 and S3

in CO & Architecture by (293 points)
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Is it d?
I thought so, but given answer is a  :|
Ok I think if we use immediate value it would not be 3 address code, rather two address code.
oh yeah , got it.  Thanks!

1 Answer

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Computers with three-address instruction formats can use each address field to specify either a processor register or a memory operand

ref Page 4 Modified from here

So Ans is (A).


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