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A stack-organized computer is an x-address instruction. What is the value of x?

A stack-organized computer is an x-address instruction. What is the value of x? Correct Answer zero

  • A stack-organized computer does not use an address field for the instructions ADD and MUL; The PUSH and POP instructions, however, need an address field to specify the operand that communicates with the stack
  • The following program shows how X = (A + B) will be written for a stack organized computer; (TOS stands for top of stack)


PUSH A TOS <- A

PUSH B TOS <- B

ADD TOS <- (A + B)

POP X M <-TOS

To evaluate arithmetic expressions in a stack computer, it is necessary to convert the expression into reverse Polish notation. The name "zero-address" is given to this type of computer because of the absence of an address field in the computational instructions.

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