Discussion
The following are the interrupts of 8085 microprocessor :
1. INTR
2. TRAP
3. RST 7.5
4. RST 5.5
The correct order in which these interrupts will be executed, if arrive simultaneously :
Answer: C
The 8085 interrupt priority, from highest, is TRAP, RST 7.5, RST 6.5, RST 5.5 and INTR, so with the four given the order is TRAP, RST 7.5, RST 5.5, INTR, that is 2, 3, 4, 1 (option C).
Option A puts INTR first, but the INTR is the lowest of the hardware interrupts. Option B places INTR before RST 5.5, and D starts with RST 5.5, which is below TRAP and RST 7.5.
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