Instruction classification: AND, OR, and TEST are members of which instruction category in typical processor ISAs?

Introduction / Context:
Logical operations form a separate class from arithmetic in many instruction sets. They are essential for masking, flag testing, and condition formation. This question asks which category includes AND, OR, and TEST.

Given Data / Assumptions:

• AND and OR perform bitwise logic between operands.
• TEST performs a bitwise AND without storing the result, updating flags for conditional decisions.
• No addition or subtraction is implied.

Concept / Approach:
Because these operations change or evaluate bits directly, they are categorized under logical/bit manipulation instructions rather than arithmetic or control flow.

Step-by-Step Solution:

Verification / Alternative check:
Architecture manuals list AND/OR/TEST among logical/bit operations (often with XOR, NOT, shifts, and rotates).

Why Other Options Are Wrong:

Common Pitfalls:
Assuming TEST is arithmetic because it affects flags; it is still a bitwise logic evaluation.

Final Answer:
Bit manipulation