8085 microprocessor has _____ hardware interrupts.
2016
8085 microprocessor has _____ hardware interrupts.
- A.
2
- B.
3
- C.
4
- D.
5
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Correct answer: D
Answer: 5 hardware interrupts.
Explanation: The Intel 8085 provides five hardware interrupt lines.
TRAP — Non-maskable interrupt and has the highest priority; it is vectored.
RST7.5 — Vectored restart interrupt (maskable) with high priority among maskable interrupts.
RST6.5 — Vectored restart interrupt (maskable).
RST5.5 — Vectored restart interrupt (maskable).
INTR — General-purpose maskable interrupt (non-vectored); an external device or hardware must supply an appropriate response or vector.
Priority order: TRAP > RST7.5 > RST6.5 > RST5.5 > INTR.