Question

The number of memory cycles required to execute the 8085 instruction LDA 3000 H is

• A. 4
• B. 2
• C. 3
• D. 5

Hint:

For instructions like LDA in the 8085, always count the opcode fetch and operand fetch cycles to determine the total memory cycles.

Answer 1

The Correct Option is A

In the 8085 microprocessor, the instruction LDA (Load Accumulator) requires 4 memory cycles to execute. These cycles are used for fetching the opcode and the operand (address), followed by the memory read operation to load the data into the accumulator. Therefore, the correct answer is option (1).