Category: 8086 interrupts

Interrupt Priority in 8086

Interrupt Priority in 8086: As far as the Interrupt Priority in 8086 are concerned, software interrupts (All interrupts except single step, NMI and INTR interrupts) have the highest priority, followed by NMI followed by INTR. Single step has the least priority. The interrupt flag is automatically cleared as part of the response of an 8086 […]

8086 Interrupt Types

8086 Interrupt Types: The 8086 Interrupt Types are Dedicated Interrupts: Type 0 : Divide by Zero Interrupt When the quotient from either a DIV or IDIV instruction is too large to fit in the result register; 8086 Interrupt Types will automatically execute type 0 interrupt. Type 1 : Single Step Interrupt The type 1 interrupt is […]

Interrupt Structure of 8086

Interrupt Structure of 8086: An Interrupt Structure of 8086 can come from any one the three sources : External signal Special Instruction in the program Condition produced by instruction External Signal (Hardware Interrupt): An 8086 can get interrupt from an external signal applied to the nonmaskable interrupt (NMI) input pin; or the interrupt (INTR) input […]