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What is the correct order of priority that is set after a controller gets reset?

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What is the correct order of priority that is set after a controller gets reset?

(a) RI/TI > TF1 > TF0 > INT1 > INT0

(b) RI/TI < TF1 < TF0 < INT1 < INT0

(c) INT0 > TF0 > INT1 > TF1 > RI/TI

(d) INT0 < TF0 < INT1 < TF1 < RI/TI

This question was posed to me in final exam.

This interesting question is from Interrupt Programming in division 8051 Microcontroller of Microcontroller

1 Answer

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Correct choice is (c) INT0 > TF0 > INT1 > TF1 > RI/TI

The explanation: On reset Interrupt Priorities are as INT0 > TF0 > INT1 > TF1 > RI/TI, where ‘>’ is used to denote highest priority.

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