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3 cards from this section. Quick, good the night before a test.
What does the opcode in an instruction represent?
Think of it as a command.
How many different operations can a 4-bit opcode represent?
2 raised to the power of 4.
What is an opcode in terms of instruction formatting?
Focus on its purpose in an instruction.
True or False: The address part in an instruction tells the processor what action to perform.
Consider what each component uniquely identifies.
Design a simple CPU instruction set with 4 opcodes and their meanings. Include explanations for the corresponding address parts.
Consider basic operations that a CPU typically performs.
Analyze how a change in the opcode affects the execution flow of a program.
Look at how even a minor change can lead to different outcomes.
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