Discussion
Which of the following is NOT an interrupt in the 8085 microprocessor ?
Answer: D
The one that is not an 8085 interrupt is MCLR.
The 8085 has five hardware interrupts: TRAP, RST 7.5, RST 6.5, RST 5.5 and INTR. MCLR is the master clear (reset) pin of some microcontrollers such as Microchip's PIC, not an 8085 interrupt.
RST 7.5, INTR and RST 5.5 are all genuine 8085 interrupt inputs.
Of the 8085 interrupts, TRAP is the only non-maskable one, and RST 7.5, 6.5 and 5.5 are vectored to fixed addresses.
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