The highest priority interrupt in the 8085 is the TRAP interrupt.
TRAP
INTR-
tf0
The peripheral with the highest interrupt priority depends on the hardware and software design of the particular system. In the 8085, the TRAP interrupt has the highest priority. The peripheral connected to TRAP is your choice.
The 8086 interrupt priorities are concerned ,software interrupt have the highest priority,followed by NMI ,followed by INTR.The lowest priority signals are unmaskable interrupts.
Which is the highest priority interrupt . 1. rst5.5 2. rst6.5 3. TRAP 4. HLD
It is an interrupt having highest priority in 8085
when interrupts requests arrive from two or more devices simultaneously , the process has to decide which request should be serviced first and which one should delayed. the processor takes the decision with the help of interrupt priorities.
INTERRUPT PRIORITY DIVIDE ERROR,INT n,INTO HIGHEST NMI INTR SINGLE STEP lowest
The highest priority interrupt in a microprocessor is usually the reset interrupt. When a reset occurs, the microprocessor is forced to stop its current operations and begin executing the reset routine. This is critical for initializing the processor and setting it to a known state before starting normal operations.
Intr timer interrupt 0 and 1 external interrupt 0 and 1
if u want to execute high priority interrupt,at that time of low priority running.So, we can mask the low priority interrupt and execute the high priority interrupt.
In most of the Intel processors, the highest priority interrupt is the NMI line (called TRAP in the 8085). NMI means a non-maskable interrupt, and that means it cannot be delayed or ignored. The NMI line is usually used when there are problems such as non-recoverable errors, but it could be used for debugging or profiling.Most of the Intel CPUs have 2 interrupt lines, the NMI line and the standard interrupt line. The regular interrupt line is connected to one or more interrupt controllers which split that interrupt signal to different devices. The NMI line is for the most critical processes in the computer.
It depends on the CPU architecture. Most modern CPUs support several levels of interrupts ranging from high priority to low. If the first interrupt that occurred was a high priority, then a lower priority one occurs, the high priority will continue to execute until it is done, then the the CPU will immediately jump to the lower one. Conversely, if the lower priority interrupt occurred first, it will be interrupted until the higher interrupt is serviced. For 80x86 series processors, do not confuse priority with vector. You may remember in the older days interrupt 13 belonging to the hard drive, and interrupts 3 and 4 being part of the serial port. This is not a function of the CPU but of the interrupt controller. The function of this device is beyond the scope of my answer here. 80x86 has 2 interrupt sources: maskable and non-maksable. Think of the non-maskable as the higher priority and the maskable as the lower. Most peripherals use the maskable interrupt line. Although a few, often functions of the BIOS, Fault, or Paged/Protected mode make use of the non-masked interrupt.
Interrupt is nothing but according to the priority of ur instruction the processor will assign memory to it and will keep the bus line busy .