| 摘要 |
In a computer, when a block of data is written to memory, it is common to attach a control word to the data. The control word is placed at a pre-arranged location, generally separate from the data. The control word contains important information about the data, such as starting address, length, etc. The presence of the control word indicates that the data is valid. Sometimes, for various reasons, the control word is written before all the data is written. This premature availability of the control word gives false information: the data is not yet completely written, yet the presence of the control word indicates otherwise. The invention prevents such a problem by preventing premature writing of the control word.
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