Difficulty: Easy
Correct Answer: Applies (two 8-bit locations store a 16-bit address)
Explanation:
Introduction / Context:
The Intel 8085 has a 16-bit address space (0000H–FFFFH). Memory is byte addressed, and every memory location stores exactly 8 bits. This question clarifies how a 16-bit address value itself is stored in memory.
Given Data / Assumptions:
Concept / Approach:
A 16-bit quantity occupies two bytes. Therefore, to store an address value (e.g., the contents of the program counter or a pointer), two consecutive memory locations are used—each holding 8 bits. Any wording that says “two memory locations (16 bits each)” is incorrect because standard memory locations are 8 bits on 8085-class systems.
Step-by-Step Solution:
Verification / Alternative check:
Instruction encodings for CALL/JMP and stack PUSH/POP on 8085 show low-byte/high-byte storage across two consecutive bytes.
Why Other Options Are Wrong:
“Two 16-bit locations” do not exist on byte-addressable 8085 memory. “Three bytes due to parity” is irrelevant. “Only the stack” is false; any memory can store addresses.
Common Pitfalls:
Confusing word-sized storage with location size; overlooking endianness when reading/writing multi-byte quantities.
Final Answer:
Applies (two 8-bit locations store a 16-bit address)
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