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1. 发明授权

US5911149A Apparatus and method for implementing a programmable shared memory with dual bus architecture 失效
标题翻译：用于实现具有双总线架构的可编程共享存储器的装置和方法
公开(公告)号：US5911149A
公开(公告)日：1999-06-08
申请号：US742339
申请日：1996-11-01
申请人： Chung-Chen Luan , Siu-Ming Chong , James H. Wang , John Wong , Gong-Jong Yeh
发明人： Chung-Chen Luan , Siu-Ming Chong , James H. Wang , John Wong , Gong-Jong Yeh
IPC分类号： G06F12/02 , G06F13/16 , G06F12/00 , G06F13/20 , G06F13/36
CPC分类号： G06F13/1684
摘要： A computer system having a processor and at least one peripheral has a programmable shared memory system and method that selectively dedicates a first potion of memory to use by the processor and allocates a second portion of memory to shared use by the processor and any peripherals in the system. The programmable memory architecture is implemented using a dual bus architecture having a first-bus connected to the processor and a second bus coupled to the processor by a system controller and to the peripherals by a peripheral controller. The programmable memory architecture additionally has a configuration controller coupled to each configurable memory bank in the system. Each configuration controller is additionally coupled to both the first and second buses. Under programmed control, the each configuration controller couples the associated memory to either the first or second bus, responsive to configuration information stored in the system controller. Memory coupled to the first bus operates as dedicated processor memory and memory coupled to the second bus operates as shared memory, accessible by the processor and any peripherals in the system.
摘要翻译：具有处理器和至少一个外围设备的计算机系统具有可编程共享存储器系统和方法，该可编程共享存储器系统和方法选择性地将由处理器使用的存储器的第一部分投入使用，并且将第二部分存储器分配给处理器和任何外围设备系统。可编程存储器架构使用具有连接到处理器的第一总线和由系统控制器耦合到处理器的第二总线以及由外围控制器耦合到外围设备的双总线架构来实现。可编程存储器架构还具有耦合到系统中的每个可配置存储体的配置控制器。每个配置控制器另外耦合到第一和第二总线两者。在编程控制下，响应于存储在系统控制器中的配置信息，每个配置控制器将相关联的存储器耦合到第一或第二总线。耦合到第一总线的存储器作为专用处理器存储器运行，耦合到第二总线的存储器作为共享存储器运行，由处理器和系统中的任何外设可访问。

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