Practice - Instruction Decode: Interpreting the Opcode and Addressing Mode Fields
Practice Questions
Test your understanding with targeted questions
What does the opcode in an instruction represent?
💡 Hint: Think about what kind of instruction is being performed.
Name one type of addressing mode.
💡 Hint: Consider how the operand is referenced in the instruction.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the opcode determine in an instruction?
💡 Hint: Think about the role of opcodes in instruction execution.
Addressing modes only apply to certain types of instructions.
💡 Hint: Recall how operands are retrieved in various scenarios.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Given an instruction with an opcode of 'STA' (store accumulator) and an addressing mode of 'indirect,' describe the steps the CU takes to execute this instruction.
💡 Hint: Break down the steps from opcode extraction to execution.
Explain how the differing addressing modes could affect the performance of the CPU in executing a sequence of instructions rapidly. Discuss an example where one mode might be favored over another.
💡 Hint: Consider the implications for accessing memory versus using direct values in the instructions.
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Reference links
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