How many interrupts signals exist in 8085? (i) 2 (ii) 3 (iii) 4 (iv) 5

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Module 1: Fundamentals of Microprocessors

20222m

How many interrupts signals exist in 8085?
(i) 2
(ii) 3
(iii) 4
(iv) 5

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Answer: (iv) 5

Explanation: 8085 has 5 hardware interrupts in priority order: TRAP (highest, non-maskable), RST 7.5, RST 6.5, RST 5.5, and INTR (lowest). TRAP is vector 0024H, RST 7.5 003CH, 6.5 0034H, 5.5 002CH.

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