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Explain priority interrupts of 8085.

  Shared By: Nathan Evans    Date: Apr 26    Category: Assembly Language    Views: 17673


The 8085 microprocessor has five interrupt inputs. They are TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR. These interrupts have a fixed priority of interrupt service. If two or more interrupts go high at the same time, the 8085 will service them on priority basis. The TRAP has the highest priority followed by RST 7.5, RST 6.5, RST 5.5. The priority of interrupts in 8085 is shown in the table.

TRAP - 1
RST 7.5 - 2
RST 6.5 - 3
RST 5.5 - 4
INTR - 5


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