CR0 has various control flags that modify the basic operation of the processor. Register CR0 is the 32 Bit version of the old Machine Status Word (MSW) register.

Moves the contents of a control register (CR0, CR2, CR3, CR4, or CR8) to a general-purpose register or the contents of a general-purpose register to a control register. The operand size …

On this wiki, registers are written in all-caps and in a code font (CR0, EFER, etc). Specific bits in those registers are written with a dot and the bit’s label (CR0.PE, CR4.PAE, EFER.LME).

Oct 20, 2025 · CR8 is a new register accessible in 64-bit mode using the REX prefix. CR8 is used to prioritize external interrupts and is referred to as the task-priority register (TPR). The …

Aug 3, 2021 · The value in the CR0 register. Header file <intrin.h> The intrinsic is only available in kernel mode, and the routine is only available as an intrinsic. END Microsoft Specific. Compiler …

Currently, only five registers are defined: CR0, CR2, CR3, CR4, and CR8. Despite this, the instruction encodings allow the possibility of registers all the way through CR15; Accessing …

As a result, when opening and closing an interrupt window for the APIC, software must ensure a window sufficient for interrupt recognition, e.g. by issuing lower (TPR) + read (TPR) + raise …

Functions to read and write control registers. Various control flags modifying the basic operation of the CPU. Configuration flags of the Cr0 register. Contains the Page Fault Linear Address …

Mar 7, 2013 · CR0.WP allows pages to be protected from supervisor-mode writes. If CR0.WP = 0, supervisor-mode write accesses are allowed to linear addresses with read-only access rights; …

Moves the contents of a control register (CR0, CR2, CR3, or CR4) to a general-purpose register or vice versa. The operand size for these instructions is always 32 bits, regardless of the …