| 摘要 |
Methods and apparatus for transferring data from a processing device to an I/O device via a data transfer buffer are provided. By signaling to an I/O device that data is available before an entire block size to be read out is written, the I/O device may begin read operations while the write is completed, thereby reducing latency. Latency may also be reduced by signaling the processing device that the buffer may be written to before the entire block size of data has been read by the I/O device, allowing the processor to begin writing the next block of data.
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