What are maskable and non maskable interrupts?
Maskable interrupt is a hardware Interrupt that can be disabled or ignored by the instructions of CPU. A non-maskable interrupt is a hardware interrupt that cannot be disabled or ignored by the instructions of CPU. 2. When maskable interrupt occur, it can be handled after executing the current instruction.
What are the two types of interrupts?
Interrupts have two types: Hardware interrupt and Software interrupt. The hardware interrupt occurrs by the interrupt request signal from peripheral circuits. On the other hand, the software interrupt occurrs by executing a dedicated instruction.
What are vectored and non vectored interrupts?
Vectored Interrupts are those which have fixed vector address (starting address of sub-routine) and after executing these, program control is transferred to that address. Non-Vectored Interrupts (Scalar Interrupt) are those in which vector address is not predefined.
What are non-maskable interrupts?
In computing, a non-maskable interrupt (NMI) is a hardware interrupt that standard interrupt-masking techniques in the system cannot ignore. It typically occurs to signal attention for non-recoverable hardware errors.
Why trap is non-maskable interrupt?
Non-Maskable Interrupts are those which cannot be disabled or ignored by microprocessor. TRAP is a non-maskable interrupt. It consists of both level as well as edge triggering and is used in critical power failure conditions.
What is non vectored interrupt?
Non-Vectored Interrupts are those in which vector address is not predefined. The interrupting device gives the address of sub-routine for these interrupts. INTR is the only non-vectored interrupt in 8085 microprocessor.
Which is non-maskable interrupt?
In computing, a non-maskable interrupt (NMI) is a hardware interrupt that standard interrupt-masking techniques in the system cannot ignore. It typically occurs to signal attention for non-recoverable hardware errors. Some NMIs may be masked, but only by using proprietary methods specific to the particular NMI.
What is a non-vectored interrupt?
What is trap interrupt?
A trap is a synchronous interrupt triggered by an exception in a user process to execute functionality. Exception conditions like invalid memory access, division by zero, or a breakpoint can trigger a trap in an OS. A trap changes the mode of an OS to a kernel routine.
What is a non-maskable interrupt?
A non-maskable interrupt is a hardware interrupt that cannot be disabled or ignored by the instructions of CPU. When maskable interrupt occur, it can be handled after executing the current instruction. When non-maskable interrupts occur, the current instructions and status are stored in stack for the CPU to handle the interrupt.
Which of the following is an example of maskable interrupt?
Examples of maskable interrupts include RST6.5, RST7.5, RST5.5 of 8085 microprocessor. Maskable interrupt is a hardware Interrupt that can be disabled or ignored by the instructions of CPU.
What is the difference between maskable interrupts and CLI/STI?
In comparison, maskable interrupts are triggered by the INT pin, but if the CLI instruction has been used to clear IF, the processor interrupt flag, the interrupt will not occur until a STI has been executed, which re-enables them. CLI/STI are typically used at the entrance to/exit from an interrupt service routine in order to avo
What do maskable and non-maskable interrupt mean in an 8086 microprocessor?
What do maskable interrupt and non-maskable interrupt mean in an 8086 microprocessor? The non-maskable interrupt is generated using the NMI pin on the processor, and is triggered no matter what on receipt of a signal on this pin.