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阅读：1770回复：2
为什么windriver中用WD_DMALock老是提示Could not lock down buffer，能否指点一二
为什么我在windriver中用WD_DMALock老是提示Could not lock down buffer，能否指点一二
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沙发#
发布于：2001-12-14 21:12
你的buffer有多大？如果大于1M，需要使用DMA_LARGE_BUFFER
具体用法可以参考手册的说明 |
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板凳#
发布于：2001-12-15 12:09
In Windows NT, contiguous kernel memory is allocated from non paged kernel pool of memory. The size of this pool is fixed at boot time by a registry setting. You can increase the allocated memory by increasing the value of NonPagedPoolSize under \"HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Memory Management in the registry. The default value is zero, which allocates a buffer of 110k.
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