Method and apparatus for peripheral device control by clients in plural
memory addressing modes
    5.
    发明授权
    Method and apparatus for peripheral device control by clients in plural memory addressing modes 失效
    用于在多个存储器寻址模式中的客户机进行外围设备控制的方法和装置

    公开(公告)号:US5797031A

    公开(公告)日:1998-08-18

    申请号:US920096

    申请日:1997-08-26

    IPC分类号: G06F9/50 G06F13/00

    CPC分类号: G06F9/5016

    摘要: A digital data processor has a central processing unit (CPU) that operates in plural addressing modes and or more adapters for receiving peripheral devices, e.g., PCMCIA devices. A first peripheral device service subsystem that handles communications between peripheral devices coupled to the adapters and software clients executing on the CPU in a first addressing mode. A second peripheral device service subsystem that handles communications between peripheral devices coupled to the adapters and clients executing on the CPU in a second addressing mode. The first peripheral device subsystem includes a configuration management section that allocates digital data processor resources, e.g., memory space, input/output channels, direct memory access (DMA) channels and interrupt (IRQ) levels, used for communications between the peripheral devices and clients, regardless of whether those clients are executing in the first or second addressing modes.

    摘要翻译: 数字数据处理器具有以多种寻址模式操作的中央处理单元(CPU)和/或用于接收外围设备(例如PCMCIA设备)的更多适配器。 第一外围设备服务子系统,以第一寻址模式处理耦合到适配器的外围设备与在CPU上执行的软件客户端之间的通信。 第二外围设备服务子系统,处理耦合到适配器的外围设备与在第二寻址模式下在CPU上执行的客户端之间的通信。 第一外围设备子系统包括配置管理部分,其分配用于外围设备和客户端之间的通信的数字数据处理器资源,例如存储器空间,输入/输出通道,直接存储器存取(DMA)通道和中断(IRQ) 无论这些客户端是以第一还是第二寻址模式执行。