Table of Contents
What is pass2?
Pass-2 of assembler generates machine code by converting symbolic machine-opcodes into their respective bit configuration(machine understandable form). It stores all machine-opcodes in MOT table (op-code table) with symbolic code, their length and their bit configuration.
What is pass2 assembler?
Two Pass Assembler As the name suggests two pass assembler does two passes over the source file. In first pass, all it does is looks for label definitions and introduces them in the symbol table (a dynamic table which includes the label name and address for each label in the source program).
What is forward reference in assembler?
A forward reference occurs when a label is used as an operand, for example as a branch target, earlier in the code than the definition of the label. The assembler cannot know the address of the forward reference label until it reads the definition of the label.
Which of the following is not a function of pass1 of an assembler?
Discussion Forum
| Que. | Which of the following is not a function of pass1 of an assembler |
|---|---|
| b. | keep track of LC |
| c. | remember literals |
| d. | remember values of symbols until pass 2 |
| Answer:generate data |
Which tables are used in pass1 and pass2 of an assembler?
Format of Data Structures Pass 2 requires a machine operation table (MOT) containing the name, length, binary code and format; pass 1 requires only name and length. Instead of using two different tables, we construct single (MOT). The Machine operation table (MOT) and pseudo-operation table are example of fixed tables.
What is backward reference in assembler?
A backward reference is a reference to an earlier statement in the job or in a cataloged or in-stream procedure called by a job step.
What is forward and reverse reference?
Forward Citation Search: A search to find all of the articles that cite back to a specific article. This search looks forward in time to see how this article contributed to the scholarly conversation. Backward Citation Search: A search to find all of the cited references in a single article.
Which of the following is not a type of assembler *?
Which of the following is not a type of assembler? Explanation: No 3 pass assembler created as yet.
What are the advantages of an assembly Mcq?
Online Test
| 4. | The advantages of assembly level programming is |
|---|---|
| a. | flexibility of programming is more |
| b. | chances of error are less |
| c. | debugging is easy |
| d. | all of the mentioned |
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