INTERRUPT PROGRAMMING
ARCHITECTURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In 8086 when Interrupt flag is set ____
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A The maskable interrupts are recognized by the CPU
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B The maskable interrupts are not recognized by the CPU
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C The non-maskable interrupts are recognized by the CPU
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D None of these
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Explanation:
Detailed explanation-1: -The Interrupt flag (IF) is a flag bit in the CPU’s FLAGS register, which determines whether or not the (CPU) will respond immediately to maskable hardware interrupts. If the flag is set to 1 maskable interrupts are enabled. If reset (set to 0 ) such interrupts will be disabled until interrupts are enabled.
Detailed explanation-2: -The interrupt flag register (IFR) corresponding to the interrupt is set. The interrupt enable register (IER) is checked to ensure that the interrupt is enabled.
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