发明名称 |
Method and apparatus for trapping unimplemented operations in input/output devices |
摘要 |
Apparatus and a method by which the flow of DMA-transferable data from an application program to an input/output device using a direct memory access circuit may be halted when the device is unable to respond to DMA-transferable data sent to it. The apparatus includes circuitry for ascertaining whether the input/output device is able to respond to DMA-transferable data transferred to the input/output device, a circuit for storing the DMA-transferable data transferred to the input/output device to which the input/output device is unable to respond, and circuitry for generating a signal to disable immediately the flow of DMA-transferable data to the input/output device and an interrupt to assure that the DMA-transferable data is handled in an expeditious manner.
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申请公布号 |
US6065071(A) |
申请公布日期 |
2000.05.16 |
申请号 |
US19980048902 |
申请日期 |
1998.03.26 |
申请人 |
NVIDIA CORPORATION |
发明人 |
PRIEM, CURTIS;ROSENTHAL, DAVID S. H. |
分类号 |
G06F13/28;(IPC1-7):G06F13/16 |
主分类号 |
G06F13/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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