The firmware reads the digital inputs and the quadrature signals from the rotary encoders, debounces everything, and presents itself to the host as a standard USB HID gamepad. This means the cabinet works with any operating system without custom drivers.
View a PDF of the paper titled Package Managers \`a la Carte: A Formal Model of Dependency Resolution, by Ryan Gibb and 4 other authors，这一点在体育直播中也有详细论述
。关于这个话题，体育直播提供了深入分析
Fortunately, Free Electrons / Bootlin has the history well-covered. TL;DR, the kernel uses netlink to tell udev about devices, udev does its necessary handling of them, and then udev re-broadcasts these events to every other program interested in them.，更多细节参见体育直播
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Also: Why my favorite Linux distro is slowing down - and I'm thrilled about it