## Physical Device Driver Reference

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### ASYNC_GETINQUECOUNT (68h) - Size of Receive Queue

Size of Receive Queue Binary integer with the size of the physical device driver receive queue. Applications should be independent of the receive queue being sized (fixed or not fixed). The information in this field allows the application to get the size of the receive queue. The current size of the receive queue is approximately 1KB, but is subject to change.

Using this information, the application should avoid device driver receive queue overruns by using an application-to-application block protocol with the system communicating with the application.