INTERRUPT PROGRAMMING
ARCHITECTURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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OS
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peripherals
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interrupt
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compiler
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Detailed explanation-1: -An interrupt request (IRQ) is a signal sent to a computer’s processor to momentarily stop (interrupt) its operations. The signal is usually sent by a hardware device to interrupt the processor so the device gets some time to run its own operation.
Detailed explanation-2: -Signals are software generated interrupts that are sent to a process when an event happens. Signals can be synchronously generated by an error in an application, such as SIGFPE and SIGSEGV, but most signals are asynchronous.
Detailed explanation-3: -The Software Interrupt instruction (SWI) is used to enter Supervisor mode, usually to request a particular supervisor function. The SWI handler reads the opcode to extract the SWI function number. This action restores the PC and CPSR, and returns to the instruction following the SWI.