公开(公告)号：US20020073258A1

公开(公告)日：2002-06-13

申请号：US09747422

申请日：2000-12-22

Applicant: Compaq Computer Corporation

Inventor： Dwight Riley ,  Christopher J. Pettey

IPC: G06F013/42

CPC classification number: G06F13/105

Abstract: A high speed connection apparatus, method, and system is provided for peripheral components on digital computer systems. The peripheral component interconnect (PCI) specification is used as a baseline for an extended set of commands and attributes. The extended command and the attribute are issued on the bus during the clock cycle immediately after the clock cycle when the initial command was issued. The extended commands and attributes utilize the standard pin connections of conventional PCI devices an(t buses making the present invention backward-compatible with existing (conventional) PCI devices and legacy computer systems. The conventional PCI command encoding is modified and the extended command is used to qualify the type of transaction and the attributes being used by the initiator of the transaction. The extended commands are divided into four groups based upon the transaction type and the extended command type. Transactions are either byte count or byte-enable transaction types. Extended command types are either validated or immediate. Some extended command encodings are reserved but can be assigned in the future to new extended commands that will behave predictable with current devices.

Abstract translation: 为数字计算机系统上的外围组件提供高速连接装置，方法和系统。 外围组件互连（PCI）规范用作扩展命令和属性集的基准。 扩展命令和属性在发出初始命令的时钟周期之后的时钟周期内在总线上发出。 扩展命令和属性利用常规PCI设备的标准引脚连接（t总线使本发明与现有（常规）PCI设备和传统计算机系统向后兼容，传统的PCI命令编码被修改并且扩展命令被使用 限制事务类型和事务发起者使用的属性，扩展命令根据事务类型和扩展命令类型分为四组，事务是字节计数或字节使能事务类型扩展 命令类型是有效的或立即的。一些扩展命令编码被保留，但可以将来分配给新的扩展命令，这些命令将以当前设备的行为可预测。