What does m1 signal in Z80 describes?(a) I/O operation status(b) Memory refresh output(c) Output pulse on instruction fetch cycle(d) Interrupt request inputI got this question in an online quiz.The above asked question is from Microprocessor of Embedded System in portion Embedded System of Embedded Systems

What does m1 signal in Z80 describes?(a) I/O operation status(b) Memor

1.	What does m1 signal in Z80 describes?(a) I/O operation status(b) Memory refresh output(c) Output pulse on instruction fetch cycle(d) Interrupt request inputI got this question in an online quiz.The above asked question is from Microprocessor of Embedded System in portion Embedded System of Embedded Systems
Answer» Right choice is (c) Output pulse on instruction fetch cycle Easy explanation: It is a signal which describes output pulse on the instruction fetch cycle. Interrupt REQUEST input, input/output OPERATION status, memory refresh output are the other SIGNALS in Z80 for various OPERATIONS.

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