UGC NET CSE | December 2008 | Part 2 | Question: 37

Question

An assembly program contains :

1. imperative and declarative statements                 
2. imperative and assembler directives           
3. imperative and declarative statements as well as assembler directives           
4. declarative statements and assembler directives

Answer 1

ans: C

Kinds of statements in assembly language

An assembly program contains following three kinds of statements:
1. Imperative statements: These indicate an action to be performed during execution of the assembled program. Each imperative statement typically translates into one machine instruction.
2. Declaration statements: The syntax of declaration statements is as follows:
[Label] DS<constant>
[Label] DC ‘<value>’
The DS statement reserves areas of memory and associates names with them. The DC statement constructs memory words containing constants.
3. Assembler directives: These instruct the assembler to perform certain actions during the assembly of a program. For example
START <constant> directive indicates that the first word of the target program generated by the assembler should be placed in the memory word with address <constant>.

ref: http://study-for-exam.blogspot.in/2013/05/what-is-assembly-language-what-kinds-of.html