The PS/2 mouse typically uses IRQ 12 for its interrupt requests. This IRQ is dedicated to the mouse, allowing the system to efficiently handle input from the device without conflicts with other hardware. In most modern systems, IRQ settings are managed automatically by the operating system, so manual configuration is rarely necessary. However, in legacy systems or specific configurations, it may be important to ensure IRQ 12 is not shared with other critical devices to maintain optimal functionality.
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