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4 cards from this section. Quick, good the night before a test.
What does the 'opcode' in an instruction signify?
Think about what part of the instruction tells the CPU what to do.
How do you calculate the effective memory location given R1 = 2?
Remember the operation: R1 + offset usually gives the effective address.
What does the term 'effective address' refer to?
Think about how you arrive at the address used for accessing data.
True or False: Indirect addressing refers to directly accessing the operand's memory location.
Remember how this mode differs from direct addressing.
You have a series of multi-word instructions that are dependent on indirect addressing. What are the potential pitfalls one might encounter in managing the program counter?
Think about what happens if PC doesn't advance correctly during indirect memory access.
If an architecture allows displacement addressing, how would you modify an instruction to reference an array located at a certain offset from a base address stored in a register?
Reflect on how you’d use a combination of two numbers to find the final memory address.
6 more questions in this section. Enroll free to practise them all.
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