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Computer Organization and Architecture · Instruction Set and Addressing Modes
Official IIT answer key · IIT Bombay · Audited Aug 2026
GATE CSE 2021 Set 2 Q44 · MSQ · 2 marks
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Instruction set and addressing modes in GATE CS is consistently tested through instruction word encoding, expanding opcode schemes, addressing mode semantics, and ISA architectural principles. Problems evaluate a candidate's ability to calculate bit allocations for opcodes, register specifiers, and immediates, as well as mapping high-level constructs (structs, arrays, pointers) to assembly addressing modes. The topic features a healthy mix of conceptual 1-mark MCQs/MSQs and rigorous 2-mark NATs involving bit calculations and assembly program traces.
Full Instruction Set and Addressing Modes guide →If the numerical value of a 2-byte unsigned integer on a little endian computer is 255 more than that on a big endian computer, which of the following choices represent(s) the unsigned integer on a little endian computer?
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