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What is the difference between a direct and indirect address instruction? How many references to memory are needed for each type of instruction to bring an opened into processor register?

Answer» ONG>ANSWER:

A direct address instruction NEEDS two references to memory: (1) Read instruction, (2) Read Operand. An indirect address instruction needs three references to memory: (1) Read instruction, (2) Read effective address, (3) Read operand.

Explanation:

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