Plan 9’s Universal Serial Bus
نویسنده
چکیده
The Universal Serial Bus is a complex and, therefore, a popular bus on personal computers and other devices. Many devices including disks, keyboards, mice, and network cards are attached to computers using it. The bus is a tree with hubs as nodes and devices as leafs and uses pol ling from the root of the tree, which is the bus controller. It permits hot plugging and removal of devices at any time. This paper describes the system software used on Plan 9 to drive the bus and its devices. How to use the software is not described here, but in the Plan 9 user s manual.
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