Via Technologies, Inc.

Chad Tsai

Jiin Lai

Andrew Su

Chih-Kuo Kao

Peter Chia

Edward Su

Ju Zhang

Andrew Chuang

The present computing system using PCI-E architecture includes at least one first PCI-E port, a first port-arbiter, a first URD logic, a microprocessor, a DARD logic and a device arbiter. The first port-arbiter receives a data from the first PCI-E port. The first URD logic is coupled to said first port-arbiter. The first URD logic includes an onboard range table and a PCI-E device range table for detecting the data of onboard access or peer-to-peer access. The microprocessor receives and processes the data from the first URD logic for said onboard access. The DARD logic receives the data from the microprocessor. The DARD logic decodes a device range of a downstream request of the data. The device arbiter is coupled to the DARD logic and the first URD logic for dispatching the data to one of the first PCI-E port.

Chipset supporting a peripheral component interconnection express (PCI-E) architecture

Method and related apparatus for internal data accessing of a computer system. In a computer system, a peripheral can issue accessing requests for system memory space with or without snooping the central processing unit (CPU). While serving a peripheral of single virtual channel utilizing a chipset supporting multiple virtual channels, the present invention assigns accessing requests to different processing queues according to their snooping/non-snooping attributes, such that reading/non-snooping requests are directly routed to a system memory. Also responses from system memory and CPU are buffered in the chipset respectively by utilizing buffer resources of different virtual channels. And by applying accessing routing dispatch, data accessing efficiency can be increased.

Method and related apparatus for internal data accessing of computer system

A method and related apparatus used for controlling a peripheral device to transfer data to a bus. The peripheral device has a bus interface circuit and a controller. The method includes storing data outputted from the controller into a first storage block of the bus interface circuit, utilizing the bus interface circuit to simultaneously control the first storage block to output its stored data to the bus and control a second storage block of the bus interface circuit to store data outputted from the controller, and utilizing the bus interface circuit to control the second storage block to output its stored data to the bus.

Method and related apparatus for controlling a peripheral device to transfer data to a bus

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Taipei Hsien, Taiwan

Chad Tsai