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ISRO2020-14

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In a two-pass assembler, resolution of subroutine calls and inclusion of labels in the symbol table is done during

  1. second pass
  2. first pass and second pass respectively
  3. second pass and first pass respectively
  4. first pass
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$\underline{\textbf{Answer:}\Rightarrow}\;\mathbf{d.}$

The generation of symbol table in a two-pass assembler happens in the first pass but it requires two pass to scan the entire source file.
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In a two-pass assembler, pass 2 only generates. Nothing else.

Precisely, the function of pass 2 is to generate the object code, to generate the data for literals, to print listings etc.

 

Rest is done by pass 1. Hence, Option D

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Option C :

The resolution of sub routine is done in second pass and the inclusion of labels in symbol table is done in first pass.

So, option C is the Correct answer. Second pass and first pass respectively.

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