System and method for providing speculative arbitration for transferring data
Номер патента: EP1029283A1
Опубликовано: 23-08-2000
Автор(ы): Donald R. Kalvestrand, Douglas E. Morrissey, Joseph S. Schibinger, Mitchell A. Bauman
Принадлежит: Unisys Corp
Опубликовано: 23-08-2000
Автор(ы): Donald R. Kalvestrand, Douglas E. Morrissey, Joseph S. Schibinger, Mitchell A. Bauman
Принадлежит: Unisys Corp
Реферат: A system and method for optimizing the amount of time it takes for a requestor (device) to receive data from a memory storage unit in a multi-requestor bus environment. The present invention provides a unidirectional response signal, referred to as an early warning signal, sent from a memory storage unit to a device, sometime after that device has executed a fetch request for data, to alert the device that the data is forthcoming. This early warning signal allows the device to arbitrate for the data bus so that when the data arrives, the device will have exclusive ownership of the data bus to accept the data immediately. The present invention comprises a main memory, a cache memory, one or more processor modules, one or more I/O modules, and an early warning bus. The cache memory is connected to the main memory via an interface bus. The processor modules are connected to the cache memory via a processor interface bus. The I/O modules are connected to the main memory via an I/O interface bus. Both the processor modules and the I/O modules include means for requesting a data unit from the main memory. The early warning bus is connected between the main memory, the cache memory, and the I/O module.
Memory system and integrated management method for plurality of dma channels
Номер патента: US20110153878A1. Автор: Jong Dae Kim,Tae Moon Roh,Jong Kee Kwon,Chun Gi Lyuh,Ik Jae CHUN,Se Wan HEO,Sang Hun Yoon. Владелец: Electronics and Telecommunications Research Institute ETRI. Дата публикации: 2011-06-23.