• Thumbnail for Interrupt
    called an interrupt handler (or an interrupt service routine, ISR) to deal with the event. This interruption is often temporary, allowing the software to resume...
    43 KB (5,520 words) - 15:52, 4 March 2025
  • Thumbnail for Operating system
    after the interrupt is serviced. A software interrupt is a message to a process that an event has occurred. This contrasts with a hardware interrupt — which...
    70 KB (8,176 words) - 17:11, 7 May 2025
  • language instruction for x86 processors that generates a software interrupt. It takes the interrupt number formatted as a byte value. When written in assembly...
    4 KB (472 words) - 17:32, 29 November 2024
  • specific interrupt condition. Interrupt handlers are initiated by hardware interrupts, software interrupt instructions, or software exceptions, and are used...
    13 KB (1,799 words) - 05:59, 15 April 2025
  • 256 interrupt vectors and the use of the IDT is triggered by three types of events: processor exceptions, hardware interrupts, and software interrupts, which...
    8 KB (1,201 words) - 23:49, 3 April 2025
  • interrupts are enabled. The Interrupt flag does not affect the handling of non-maskable interrupts (NMIs) or software interrupts generated by the INT instruction...
    5 KB (652 words) - 20:16, 18 December 2022
  • events. Installing a software interrupt vector allows it to be called by the currently running program. Installing a timer interrupt handler allows a TSR...
    13 KB (1,799 words) - 17:13, 14 December 2024
  • indicated in hardware by the registers in a programmable interrupt controller, or in software by a bitmask or integer value and source code of threads...
    5 KB (696 words) - 19:24, 24 August 2024
  • execute the BIOS interrupt calls in the Virtual 8086 mode, but only for OS booting) to access up to 4GB memory. In all computers, software instructions control...
    29 KB (3,319 words) - 17:50, 25 July 2024
  • all handle interrupts in a similar fashion. There are three hardware interrupt signals common to all 65xx processors and one software interrupt, the BRK...
    29 KB (3,677 words) - 13:05, 21 December 2024
  • Thumbnail for Interrupt vector table
    in a table of interrupt vectors. Each entry of the interrupt vector table, called an interrupt vector, is the address of an interrupt handler (also known...
    5 KB (492 words) - 01:28, 4 November 2024
  • 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
  • an inter-processor interrupt (IPI), also known as a shoulder tap, is a special type of interrupt by which one processor may interrupt another processor...
    4 KB (378 words) - 20:54, 8 September 2024
  • Thumbnail for Interrupt request
    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
  • INT 13H (redirect from Interrupt 13h)
    extensions. INT is an x86 instruction that triggers a software interrupt, and 13hex is the interrupt number (as a hexadecimal value) being called. Modern...
    30 KB (1,945 words) - 15:08, 17 March 2025
  • Inter-processor interrupt (IPI) Interrupt latency Non-maskable interrupt (NMI) IRQL (Windows) "Intel® 64 and IA-32 Architectures Software Developer's Manual...
    4 KB (424 words) - 17:15, 6 April 2025
  • DOS API (redirect from DOS interrupt call)
    DOS-compatible operating systems. Most calls to the DOS API are invoked using software interrupt 21h (INT 21h). By calling INT 21h with a subfunction number in the...
    21 KB (1,231 words) - 19:18, 19 November 2024
  • no possibility of conflicting with any existing software. A special BIOS routine – software interrupt 0x15, subfunction 0x85 – was added to signal the...
    6 KB (712 words) - 17:37, 5 May 2025
  • destination operands are swapped, among many other differences.) Using the software interrupt 21h instruction to call the MS-DOS operating system for output to...
    57 KB (6,594 words) - 16:42, 9 May 2025
  • Thumbnail for System call
    implement this is to use a software interrupt or trap. Interrupts transfer control to the operating system kernel, so software simply needs to set up some...
    19 KB (2,295 words) - 23:43, 3 May 2025
  • Thumbnail for A20 line
    is usually not changed for a converted program), and executing a software interrupt, INT #224. The result is returned in the AL register if it is a byte...
    42 KB (4,913 words) - 00:20, 30 September 2024
  • Thumbnail for Real-time clock
    (often less than 1 ppm). Software can do the math to make these into accurate RTCs. The hardware timer can produce a periodic interrupt, e.g. 50 Hz, to mimic...
    17 KB (1,993 words) - 16:01, 13 May 2025
  • Thumbnail for Motorola 68000
    from exception, i.e. an interrupt), TRAP (trigger a software exception similar to software interrupt), CHK (a conditional software exception) Branch: Bcc...
    69 KB (7,389 words) - 05:18, 14 May 2025
  • is usually not changed for a converted program), and executing a software interrupt, INT #224. The result is returned in the AL register if it is a byte...
    17 KB (1,558 words) - 01:25, 3 April 2025
  • Exception handling (category Software anomalies)
    ways of exception handling although they may be interrelated, e.g. a CPU interrupt could be turned into an OS signal. Some exceptions, especially hardware...
    17 KB (1,806 words) - 04:12, 1 December 2023
  • computing, Intel's Advanced Programmable Interrupt Controller (APIC) is a family of programmable interrupt controllers. As its name suggests, the APIC...
    17 KB (1,993 words) - 02:56, 2 March 2025
  • exceptions. For some IA-32 versions of the kernel, one example of such a software interrupt handler (of which there are many) is in its IDT table entry 2E16 (hexadecimal;...
    17 KB (1,414 words) - 04:46, 21 February 2025
  • higher priority interrupt. Windows maps not only hardware interrupt levels to its internal interrupt table but also maps software interrupts. The mappings...
    3 KB (320 words) - 19:28, 11 February 2024
  • Thumbnail for Top (software)
    | | | | '------. <user> <system> <nice> <idle> <IOWait> <hardware/software interrupt> <steal time> MiB Mem : 1031911.+total, 368915.2 free, 172285.0 used...
    11 KB (1,301 words) - 20:27, 15 May 2025
  • contexts Software interrupt, an interrupt routine in a computer operating system SWI, an assembler mnemonic to perform a software interrupt on the ARM...
    1 KB (143 words) - 04:15, 4 January 2024