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QWhich two additional registers are included in the Z80 microprocessor?

ID: #10467 Embedded System 83 views
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#10467Q ID
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Embedded SystemTopic
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  • A Interrupt and NMI ✔ ✖
  • B NMI and PSW ✔ ✖
  • C Interrupt vector and memory refresh ✔ ✖
  • D NMI and memory refresh ✔ ✖
Correct Answer: Option C

Explanation

The Z80 microprocessor has two additional registers, the Interrupt Vector (IV) register and the Memory Refresh register. The Interrupt Vector register is used in interrupt handling, while the Memory Refresh register is used to control on-chip DRAM. Mode 2 is used to point the required software routine to process the interrupt, and in mode 1, the interrupt vector is supplied via the external data bus.

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