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What is done in mode1 of Z80?(a) Interrupt vector is supplied via the external bus(b) Interrupt vector is supplied via the peripherals(c) NMI gets started(d) Interrupt gets acknowledge from peripheralI had been asked this question during an online exam.I would like to ask this question from Microprocessor of Embedded System in division Embedded System of Embedded Systems

Answer»

The correct answer is (a) INTERRUPT vector is SUPPLIED via the external bus

The explanation: In mode 1, the interrupt vector is supplied via the external data bus. The MEMORY REFRESH register is USED to control the on-chip DRAM refresh circuitry.



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