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In this tutorial, we will talk about the interrupt vector table. Firstly, we will define the interrupt vector table (IVT). Secondly, we will see the role of IVT for interrupts and exceptions processing in microcontrollers or microprocessors. After that, we will see the interrupt vector table of TM4C123G ARM Cortex M4 microcontroller.

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 (also known as ISR).

2022年6月29日 · Types of Interrupt in 8086 Here I have covered the Dedicated Functions of Interrupt 1. Type 0 Interrupt - Divide Overflow Interrupt in 8086 2. Type 1 Interrupt - Single Step Interrupt in 8086 3....

It decrements stack pointer by 2 and pushes the current instruction pointer contents on the stack. It does an indirect far jump at the start of the procedure by loading the CS and IP values for the start of the interrupt service routine (ISR). An IRET instruction at the end of the interrupt service procedure returns execution to the main program.

2021年9月23日 · It is a table of Interrupt Vectors (pointers to routines that handle interrupts). The vector table contains the reset value of the stack pointer, and the start addresses, also called exception vectors, for all exception handlers. Each interrupt request number is reserved for a specific purpose.

2023年5月10日 · It is a table in the memory that contains the interrupt vectors of different interrupts. The interrupt vector is a four-byte entry in the IVT, which contains a 16-bit offset part and 16-bit segment base address part that are loaded in the IP (instruction pointer) and CS (code segment) registers, respectively, when an interrupt is received.

There are two types of interrupts for 8086: Hardware Interrupts: These interrupts occur as signals on the external pins of the µP. 8086 has two pins to accept hardware interrupts, NMI and INTR. Software Interrupts: These interrupts are caused by writing the software interrupt instruction INTn where “n” can be any value from 0 to 255 (00H to FFH).

2022年4月21日 · Interrupt allows peripheral devices to access the microprocessor. Whenever an interrupt occurs the processor completes the execution of the current instruction and starts the execution of an Interrupt Service Routine (ISR). ISR is a program that tells the processor what to do when the interrupt occurs.

2020年12月11日 · In summary, the BIOS Interrupt Vector Table is a crucial component of low-level system programming that facilitates the handling of hardware interrupts. Understanding its structure, purpose, and significance is essential for developers working with low-level programming and system-level software.