microsoft windows kernel pnp device configuration package

Two subsystems make up the user mode layer of Windows NT: the Environment subsystem (which runs applications written for many different types of operating systems), and the Integral subsystem (operates system specific functions on behalf of the environment subsystem).

User mode in Windows NT is made of subsystems capable of passing I/O requests to the appropriate kernel mode software drivers by using the I/O manager. The architecture comprises a simple kernel, hardware abstraction layer (HAL), drivers, and a range of services (collectively named Executive), which all exist in kernel mode. The Windows NT kernel is known as a hybrid kernel. Programs and subsystems in user mode are limited in terms of what system resources they have access to, while the kernel mode has unrestricted access to the system memory and external devices.

Starting with Windows 2000, Microsoft began making 64-bit versions of Windows available-before this, these operating systems only existed in 32-bit versions. To process input/output (I/O) requests, they use packet-driven I/O, which utilizes I/O request packets (IRPs) and asynchronous I/O. It is a preemptive, reentrant operating system, which has been designed to work with uniprocessor and symmetrical multi processor (SMP)-based computers. The architecture of Windows NT, a line of operating systems produced and sold by Microsoft, is a layered design that consists of two main components, user mode]] and kernel mode. The Windows NT operating system family's architecture consists of two layers ( user mode and kernel mode), with many different modules within both of these layers.

Microsoft windows kernel pnp device configuration package