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The program counter (PC), [1] commonly called the instruction pointer (IP) in Intel x86 and Itanium microprocessors, and sometimes called the instruction address register (IAR), [2] [1] the instruction counter, [3] or just part of the instruction sequencer, [4] is a processor register that indicates where a computer is in its program sequence.
The program counter (PC) is a register that holds the memory address of the next instruction to be executed. After each instruction copy to the memory address register (MAR), the PC can either increment the pointer to the next sequential instruction, jump to a specified pointer, or branch conditionally to a specified pointer. [2]
The program status word [a] (PSW) is a register that performs the function of a status register and program counter, and sometimes more. The term is also applied to a copy of the PSW in storage. The term is also applied to a copy of the PSW in storage.
Program Counter (PC) – a pointer to the address of the next instruction to be executed for this process; CPU Registers – register set where process needs to be stored for execution for running state; CPU Scheduling Information – information scheduling CPU time; Memory Management Information – page table, memory limits, segment table;
A von Neumann architecture scheme. The von Neumann architecture—also known as the von Neumann model or Princeton architecture—is a computer architecture based on the First Draft of a Report on the EDVAC, [1] written by John von Neumann in 1945, describing designs discussed with John Mauchly and J. Presper Eckert at the University of Pennsylvania's Moore School of Electrical Engineering.
Suppose a process A is running and a timer interrupt occurs. The user registers — program counter, stack pointer, and status register — of process A are then implicitly saved by the CPU onto the kernel stack of A. Then, the hardware switches to kernel mode and jumps into interrupt handler for the operating system to take over.
Two lawmakers are calling for a counter-drone measure to be added into the short-term funding legislation Congress needs to pass in the coming days. Reps. Chrissy Houlahan (D-Pa.) and Andrew ...
InstructionJUMP: # To prepare for the next instruction, the instruction-decode microcode has already # moved the program counter to the memory address register. This instruction fetches # the target address of the jump instruction from the memory word following the # jump opcode, by copying from the memory data register to the memory address ...