Which Interrupt has the highest priority in 8086?
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Q. Which Interrupt has the highest priority 1 point?
Explanation: The Non-Maskable Interrupt input pin has the highest priority among all the external interrupts. Explanation: TRAP is the internal interrupt that has highest priority among all the interrupts except the Divide By Zero (Type 0) exception.
Table of Contents
- Q. Which Interrupt has the highest priority 1 point?
- Q. Which interrupt has highest priority after reset?
- Q. How do I clear an interrupt flag?
- Q. For which interrupt programmer needs to clear the flag?
- Q. What is the use of interrupt flag?
- Q. Which register holds 4 interrupt flags?
- Q. Which instruction is used to disable all interrupts?
Q. Which interrupt has highest priority after reset?
Which interrupt has highest priority in 8051? Reset is the highest priority interrupt, upon reset 8051 microcontroller start executing code from 0x0000 address.
Q. How do I clear an interrupt flag?
Clear Interrupt Flag (cli)
- Operation. 0 -> IF.
- Description. Clears the interrupt flag if the current privilege level is at least as privileged as IOPL; affects no other flags.
- Example. Clear the interrupt flag: cli.
Q. For which interrupt programmer needs to clear the flag?
Programming Serial Interrupt Whenever one byte of data is sent or received, the serial interrupt is generated and the TI or RI flag goes high. Here, the TI or RI flag needs to be cleared explicitly in the interrupt routine (written for the Serial Interrupt).
Q. What is the use of interrupt flag?
The Interrupt flag (IF) is a system flag bit in the x86 architecture’s FLAGS register, which determines whether or not the central processing unit (CPU) will respond to maskable hardware interrupts.
Q. Which register holds 4 interrupt flags?
FLAGS
| Intel x86 FLAGS register | ||
|---|---|---|
| Bit # | Mask | =0 |
| 4 | 0x0010 | NA(No Auxiliary Carry) |
| 5 | 0x0020 | |
| 6 | 0x0040 | NZ(Not Zero) |
Q. Which instruction is used to disable all interrupts?
The “di instruction” and “ei instruction” of the assembler instruction can be used to disable an interrupt locally in a function described in C language….
| Interrupt Control Function | Operation | Processing by CC-RH |
|---|---|---|
| __DI | Disables the acceptance of all maskable interrupts. | Generates di instruction. |
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