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The Interrupt flag (IF) is a flag bit in the CPU's FLAGS register, which determines whether or not the (CPU) will respond immediately to maskable hardware interrupts. [1] If the flag is set to 1 maskable interrupts are enabled. If reset (set to 0) such interrupts will be disabled until
An alternate software system which usually resides in the computer's firmware, or a hardware-assisted debugger, is then executed with high privileges. It was first released with the Intel 386SL . [ 3 ] [ 4 ] While initially special SL versions were required for SMM, Intel incorporated SMM in its mainline 486 and Pentium processors in 1993.
Message Signaled Interrupts (MSI) are a method of signaling interrupts, using special in-band messages to replace traditional out-of-band signals on dedicated interrupt lines. While message signaled interrupts are more complex to implement in a device, they have some significant advantages over pin-based out-of-band interrupt signalling, such ...
Clock-comparator subclass mask 0 21 CPU-timer subclass mask 0 22 Service-signal subclass mask 0 24 Set to 1 0 25 Interrupt-key subclass mask 0 26 Set to 1 0 27 ETR subclass mask 0 28 Program-call-fast 0 29 Crypto control 1 0 Primary space-switch-event control 1 1-19 Primary segment-table origin 1 22 Primary subspace-group control 1 23
The hardware interrupt signals are all active low, and are as follows: [1] RESET a reset signal, level-triggered NMI a non-maskable interrupt, edge-triggered IRQ a maskable interrupt, level-triggered ABORT a special-purpose, non-maskable interrupt (65C816 only, see below), level-triggered
This means malware is unable to capture a screenshot of your computer screen. You are also unable to capture screenshots on your computer screen. To turn off this option, click the green check mark to change to a red X. You may turn this feature on or off at anytime.
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On IBM PC compatible computers that use the Advanced Programmable Interrupt Controller (APIC), IPI signaling is often performed using the APIC. When a CPU wishes to send an interrupt to another CPU, it stores the interrupt vector and the identifier of the target's local APIC in the Interrupt Command Register (ICR) of its own local APIC. A ...