What is the XCHG command does in 8085 ?

Explanation:

XCHG Command in 8085 Microprocessor

Definition: The XCHG command in the 8085 microprocessor is an instruction used to exchange the contents of the HL register pair with the DE register pair. This instruction is used to facilitate data manipulation and temporary storage during program execution.

Working Principle: When the XCHG command is executed, the contents of the HL register pair are swapped with the contents of the DE register pair. This means that the data in the H register is exchanged with the data in the D register, and the data in the L register is exchanged with the data in the E register. This operation is useful in various scenarios where data needs to be temporarily stored or manipulated.

Applications: The XCHG command is commonly used in assembly language programming for tasks such as sorting algorithms, temporary data storage, and other operations where data exchange between registers is required. It is particularly useful in scenarios where the programmer needs to manipulate data without using additional memory locations.

Correct Option Analysis:

The correct option is: Option 1: Exchange the content of HL register pair with DE register pair.

This option correctly describes the function of the XCHG command in the 8085 microprocessor. When the XCHG command is executed, the contents of the HL register pair are exchanged with the contents of the DE register pair, allowing for efficient data manipulation and temporary storage