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The instruction pointer (IP), also known as the program counter (PC) in some architectures, is a special register in a computer's CPU that tracks the address of the next instruction to be executed in a program. As the CPU processes instructions sequentially, the instruction pointer is updated to point to the subsequent instruction, allowing for the orderly execution of code. In the case of control flow changes, such as jumps or function calls, the instruction pointer can be modified to point to a different location in memory. This mechanism is essential for the sequential flow of program execution.
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What is the difference between instruction registers and instruction pointer?
instruction register is used to store the next instruction to be executed. instruction pointer is used to store the address of the next instruction to be executed.
What is program counter?
Synonym for Instruction Pointer.
What is the need of instruction pointer?
IP(instruction Pointer) is a processor Register IP store the offset address of the next instruction IP can be modified by Jump & call condition IP can Increment by 1,2,3.......bytes Regard:tiger_ucet@yahoo.com
Role of instruction pointer in 8086?
Its role is to point to the next instruction to be executed in the CPU. It always points to the next instruction to be executed in the CPU
What is IR in microprocessor?
it's instruction pointer register it's in cpu and it holds the instruction which the cpu fetching it from memory
Purpose of program counter in a microprocessor is?
In 8085 program counter stores the address of the next instruction which is to be fecthed.same function is performed by instruction pointer in 8086.
What is the difference between stack pointer and program counter?
The stack pointer keeps track of the top of the stack used by the current thread. The program counter keeps track of the next instruction in a program. Both are registers and both store a memory address.
What is the contents of the stack pointer after the execution of the call instruction?
On a near call, the stack pointer is 2 less than its original value. On a far call, it is 4 less.
What is the need of Instruction PointerIP in 8086 microprocessor?
The Instruction Pointer (IP) in an 8086 microprocessor contains the address of the next instruction to be executed. The processor uses IP to request memory data from the Bus Interface Unit, and then increments it by the size of the instruction.
Which register in 8086 contains the address of the next instruction to be fetched?
program counter holds the address of the next instruction.
What is the position of the stack pointer after the pop instruction in Intel's 8085 and 8086?
In Intel's 8085 microprocessor, the stack pointer (SP) is decremented by 2 after a POP instruction, as it retrieves a 16-bit value from the stack. In the 8086 microprocessor, the stack pointer is decremented by 2 as well, due to the same reason of retrieving a 16-bit word from the stack. Thus, in both architectures, the stack pointer points to the next available address in the stack after the POP operation.
Difference between program counter and instruction pointer?
There isn't any difference. Two different words forexactly same thing. Third way to call it is instruction address register.
