INTRODUCTION TO MICROPEOCESSOR
MICROCOMPUTER SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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INT and INTO
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INT3 and IRET
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INTO and IRET
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INT and INT3
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Detailed explanation-1: -INT 3-Break Point Interrupt Instruction It is a 1-byte instruction having op-code is CCH. These instructions are inserted into the program so that when the processor reaches there, then it stops the normal execution of program and follows the break-point procedure.
Detailed explanation-2: -Interrupt vectors are addresses which inform the interrupt handler as to where to find the ISR. All interrupts are assigned a number from 0 to 255. The interrupt vectors associated with each interrupt number are stored in the lower 1024 bytes of PC memory.
Detailed explanation-3: -An interrupt vector table (IVT) is a data structure that associates a list of interrupt handlers with a list of interrupt requests in a table of interrupt vectors. Each entry of the interrupt vector table, called an interrupt vector, is the address of an interrupt handler.