SSC IMD SA 2017 – Question 151

Which of the following is the purpose of the ORIGIN directive?

• It is to indicate the starting position in memory where the program block is to be stored.
• It is to indicate the beginning of the computation code.
• It is to indicate the purpose of the code.
• It lists the locations of all registers used.

Detailed Explanation:

The correct answer is a) It indicates the starting position in memory where the program block is to be stored (यह स्मृति में प्रारंभिक स्थिति को इंगित करने के लिए है, जहां प्रोग्राम ब्लॉक को संग्रहीत किया जाना है।).

In assembly language programming, ORIGIN (frequently abbreviated as ORG) is an assembler directive (pseudo-instruction):

• It instructs the assembler to reset or set its internal Location Counter (LC) to the specified address.
• As a result, all subsequent instructions and data declarations are assigned contiguous memory locations beginning precisely at that specified address.
• Example: ORIGIN 2000H tells the assembler that the very next machine code byte should be placed at physical memory address 2000H.

Because it controls the placement of code and data blocks in memory, option (a) correctly defines its purpose.