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    • 8. 发明授权
    • Memory management for use with burst mode
    • 内存管理用于突发模式
    • US06499076B2
    • 2002-12-24
    • US09917715
    • 2001-07-31
    • Atsushi DateKatsunori KatoNoboru YokoyamaTadaaki MaedaTakafumi Fujiwara
    • Atsushi DateKatsunori KatoNoboru YokoyamaTadaaki MaedaTakafumi Fujiwara
    • G06F100
    • G06F13/364
    • A P bus from a CPU, an MC bus from a system memory, an IO bus to which an input/output device has been connected, and a G bus for transferring image data of a scanner/printer controller are connected to a system bus bridge (SBB). The SBB connects any of the P bus, G bus and IO bus as a master and any of the MC bus and IO bus as a slave in dependence upon a request from a master. At this time the P bus and IO bus can be connected in parallel with the G bus and MC bus. As a result, access to the memory by the scanner/printer controller can be carried out in parallel with use of the input/output device by the CPU. This makes it possible to process a large quantity of data, such as image data, efficiently.
    • 来自CPU的AP总线,来自系统存储器的MC总线,连接有输入/输出设备的IO总线和用于传送扫描器/打印机控制器的图像数据的G总线连接到系统总线桥( SBB)。 SBB根据主机的请求,将任何一个P总线,G总线和IO总线作为主机和任何一个MC总线和IO总线作为从机连接。 此时,P总线和IO总线可以与G总线和MC总线并联连接。 因此,可以使用CPU的输入/输出设备并行地执行扫描器/打印机控制器对存储器的访问。 这使得可以有效地处理诸如图像数据的大量数据。