José Mejuto schrieb: Thanks for your FIFO research :-)
Right, I do not correctly write the idea. I was trying to say that the FIFO in acts like a buffer that you can forget about it (until no receive event/interrupt) is received, while in the send FIFO the OS waits for a full empty/transmission before return from call. Are we completly off-topic ?
Quite a bit. Applications don't have to care about such hardware details, because the drivers of most systems will buffer all I/O, and will allow for both synchronous and asynchronous I/O.
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