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The interrupt button/programmer's key protruding from the air vent on the left-hand side of an Apple Macintosh Classic II computer (on the left, above the circular symbol) The programmer's key , or interrupt button , is a button or switch on Classic Mac OS -era Macintosh systems, which jumps to a machine code monitor .
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 program, an interrupt handler, to run instead. Hardware interrupts are used to handle events such as receiving data from a modem or network card , key presses, or mouse movements.
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
For example, pressing a key on a computer keyboard, [1] or moving the mouse, triggers interrupts that call interrupt handlers which read the key, or the mouse's position, and copy the associated information into the computer's memory. [2] An interrupt handler is a low-level counterpart of event handlers.
Learn all about the frequently asked questions about DataMask, a software that helps you protect your computer. DataMask by AOL · Oct 28, 2023 Popular Products
In computing, a keyboard controller is a device that interfaces a keyboard to a computer. Its main function is to inform the computer when a key is pressed or released. When data from the keyboard arrives, the controller raises an interrupt (a keyboard interrupt ) to allow the CPU to handle the input.
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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