INTERRUPT PROGRAMMING
ARCHITECTURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The ____ is a maskable interrupt because the microprocessor will be interrupted only if interrupts are enabled using set interrupt flag instruction.
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INTR
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NMI
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RST
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INT
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Explanation:
Detailed explanation-1: -Explanation: The INTR signal can be masked by resetting the interrupt flag.
Detailed explanation-2: -A non-maskable is an interrupt which can not be disabled. RST 7.5, RST 5.5 are maskable interrupts but TRAP is a non-maskable interrupt.
Detailed explanation-3: -The 8086 has two hardware interrupt pins, i.e. NMI and INTR. NMI is a non-maskable interrupt and INTR is a maskable interrupt having lower priority. One more interrupt pin associated is INTA called interrupt acknowledge.
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