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WHAT'S YOUR ENGINEERING QUOTIENT?

Problem 7—Even though self-exclusive-or is often a faster and shorter instruction to reset (zero fill) a register, it cannot always replace the "load register with immediate value zero" instruction. Why?

The exclusive-or instruction is considered an arithmetic instruction, and it usually affects the status flags. However, the "load register with immediate value zero" instruction is a move instruction, and it does not affect status registers.

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