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QWhich instruction is used to switch between register sets in the Z80 microprocessor?

ID: #10468 Embedded System 114 views
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#10468Q ID
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Embedded SystemTopic
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  • A Instruction opcodes ✔ ✖
  • B AXX instruction ✔ ✖
  • C EXX instruction ✔ ✖
  • D Register instruction ✔ ✖
Correct Answer: Option C

Explanation

The Z80 microprocessor has two sets of registers, the main registers and the alternate registers, and only one set of registers can be used at a time. The switching of registers and data transfer is performed by the EXX instruction. This instruction swaps the contents of the main and alternate register sets, allowing the processor to access the alternate registers.

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