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41. 发明授权

US6078970A System for determining adapter interrupt status where interrupt is sent to host after operating status stored in register is shadowed to host memory 失效
标题翻译：用于确定适配器中断状态的系统，其中存储在寄存器中的操作状态后中断发送到主机被遮蔽到主机存储器
公开(公告)号：US6078970A
公开(公告)日：2000-06-20
申请号：US951157
申请日：1997-10-15
申请人： Gregory Michael Nordstrom , Daniel Frank Moertl , Thomas Rembert Sand
发明人： Gregory Michael Nordstrom , Daniel Frank Moertl , Thomas Rembert Sand
IPC分类号： G06F13/24
CPC分类号： G06F13/24
摘要： An I/O adapter connects an I/O adapter to an I/O bus and includes a device interrupt status register and an interrupt status shadow address register. The device interrupt status register stores the interrupt status of the I/O adapter. The I/O adapter accesses the interrupt status shadow address register to determine an address of main memory at which the device interrupt status register is shadowed. After shadowing the interrupt status, the I/O adapter interrupts the processor complex which may then access local, main memory to determine the interrupt status. A multifunction I/O adapter permits a plurality of I/O adapters to be connected thereto and includes a function interrupt status register to summarize the interrupt status of all the I/O adapters attached thereto. After shadowing the summarized interrupt status, the multifunction I/O adapter interrupts the processor complex which may then access local, main memory to determine the interrupt status.
摘要翻译： I / O适配器将I / O适配器连接到I / O总线，并包括一个设备中断状态寄存器和一个中断状态影子地址寄存器。器件中断状态寄存器存储I / O适配器的中断状态。 I / O适配器访问中断状态阴影地址寄存器，以确定器件中断状态寄存器被遮蔽的主存储器的地址。在遮蔽中断状态后，I / O适配器中断处理器复合体，然后可以访问本地主存储器以确定中断状态。多功能I / O适配器允许多个I / O适配器连接到其上，并且包括功能中断状态寄存器，以总结所附加到其上的所有I / O适配器的中断状态。在遮蔽总结的中断状态之后，多功能I / O适配器中断处理器复合体，然后可以访问本地主存储器以确定中断状态。

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