In a computer, an interrupt request (or IRQ) is a hardware signal sent to the processor that temporarily stops a running program and allows a special...
10 KB (1,273 words) - 12:33, 27 December 2024
In digital computers, an interrupt (sometimes referred to as a trap) is a request for the processor to interrupt currently executing code (when permitted)...
43 KB (5,520 words) - 15:52, 4 March 2025
Fast interrupt request (FIQ) is a specialized type of interrupt request, which is a standard technique used in computer CPUs to deal with events that need...
2 KB (221 words) - 20:02, 24 August 2024
computing, a programmable interrupt controller (PIC) is an integrated circuit that helps a microprocessor (or CPU) handle interrupt requests (IRQs) coming from...
4 KB (424 words) - 17:15, 6 April 2025
IRQL (Windows) (redirect from Interrupt request level)
generates signals that are sent to an interrupt controller. The interrupt controller sends an interrupt request (or IRQ) to the CPU with a certain priority...
3 KB (320 words) - 19:28, 11 February 2024
computing, interrupt latency refers to the delay between the start of an Interrupt Request (IRQ) and the start of the respective Interrupt Service Routine...
6 KB (667 words) - 15:33, 21 August 2024
An interrupt vector table (IVT) is a data structure that associates a list of interrupt handlers with a list of interrupt requests in a table of interrupt...
5 KB (492 words) - 01:28, 4 November 2024
traditional interrupt mechanisms, such as the legacy interrupt request (IRQ) system. Message signaled interrupts are supported in PCI bus since its version 2...
13 KB (1,535 words) - 16:49, 7 May 2024
Operating system (section Software interrupt)
device finishes writing, the device will interrupt the currently running process by asserting an interrupt request. The device will also place an integer...
70 KB (8,176 words) - 17:11, 7 May 2025
initialization period of six clock cycles, after which it sets the interrupt request disable flag in the status register and loads the program counter...
29 KB (3,677 words) - 13:05, 21 December 2024
The interrupt priority level (IPL) is a part of the current system interrupt state, which indicates the interrupt requests that will currently be accepted...
5 KB (696 words) - 19:24, 24 August 2024
vertical blank pulse is also used to generate an interrupt request for the computer's microprocessor. The interrupt service routine can then modify data in the...
2 KB (289 words) - 06:21, 8 March 2024
Context switch (section Interrupt handling)
sends interrupt request to PIC) and presented with the read. For interrupts, a program called an interrupt handler is installed, and it is the interrupt handler...
15 KB (1,963 words) - 07:06, 23 February 2025
Control bus (redirect from Bus request)
Indicates the CPU has granted access to the bus. Interrupt request (IRQ). A device with lower priority is requesting access to the CPU. Clock signals. The signal...
3 KB (378 words) - 21:58, 19 January 2023
Intel 8259 (category Interrupts)
are as follows: eight interrupt request input lines named IRQ0 through IRQ7, an interrupt request output line named INTR, interrupt acknowledgment line...
11 KB (1,618 words) - 14:58, 21 April 2025
an interrupt cycle, a fifth style of transfer was automatically invoked to convey an interrupt vector from the interrupting device to the interrupt-fielding...
6 KB (665 words) - 21:07, 18 February 2025
HTTP (redirect from HTTP request)
etc.) and the server usually sends only the requested part(s). This is useful to resume an interrupted download (when a file is very large), when only...
61 KB (7,773 words) - 16:25, 14 May 2025
memory or I/O space port addresses, direct memory access channels, interrupt request lines and other mechanisms, which must be uniquely associated with...
19 KB (2,228 words) - 11:41, 8 April 2025
Programmer's key (redirect from Interrupt button)
BAR WITH NOTCH. On most 68000 family based Macintosh computers, an interrupt request can also be sent by holding down the command key and pressing the...
2 KB (224 words) - 15:28, 3 March 2023
are used in cloud computing to provide services through networks. Interrupt request (IRQ) lines Direct memory access (DMA) channels Port-mapped I/O Memory-mapped...
4 KB (502 words) - 14:49, 4 February 2025
mode generally do not use the BIOS interrupt calls to support system functions, although they use the BIOS interrupt calls to probe and initialize hardware...
29 KB (3,319 words) - 17:50, 25 July 2024
Task Control Block (redirect from Request Block)
following types of request blocks Interruption Request Block: 281–284 An IRB is used to handle an asynchronous exit. Program Request Block: 285–287 A...
5 KB (576 words) - 19:04, 4 April 2025
ARM architecture family (redirect from Generic Interrupt Controller)
Fast Interrupt reQuest mode, FIQ for short, allowed registers 8 through 14 to be replaced as part of the interrupt itself. This meant FIQ requests did...
142 KB (13,704 words) - 17:41, 14 May 2025
conflicting with any existing software. A special BIOS routine – software interrupt 0x15, subfunction 0x85 – was added to signal the OS when SysRq was pushed...
6 KB (712 words) - 17:37, 5 May 2025
its "done" I/O flag when it requested an interrupt, and the convention was that the device would clear its interrupt request when the CPU executed a I/O...
65 KB (9,315 words) - 21:41, 12 May 2025
In computing, a non-maskable interrupt (NMI) is a hardware interrupt that standard interrupt-masking techniques in the system cannot ignore. It typically...
8 KB (995 words) - 00:34, 30 September 2024
assigned to a separate interrupt; by routing each of those interrupts to different CPUs or CPU cores, processing of the interrupt requests triggered by the...
17 KB (1,497 words) - 09:12, 3 May 2025
Low Pin Count (section Serialized interrupts)
the PCI bus PME# signal. LSMI# (open-collector): System management interrupt request. This is only required if an LPC device needs to trigger an SMI# in...
29 KB (4,121 words) - 05:30, 17 January 2025
Look up IRQ in Wiktionary, the free dictionary. IRQ may refer to: Interrupt request, a computer hardware signal Iraq (ISO 3166-1 country code) Qeshm Air...
194 bytes (60 words) - 02:20, 17 September 2021
POKEY (section Eight IRQ interrupts)
(serial transmission end interrupt) T1 Timer 1, timer 1 interrupt T2 Timer 2, timer 2 interrupt T4 Timer 4, timer 4 interrupt Interrupts can be set on or off...
28 KB (2,850 words) - 15:44, 13 May 2025