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Hi all,
I didn't exactly found which is the problem and moreover I don't know if it is only due to the high speed I'm using (460800 baud); what I deduced and supposed is that the problem is not the Avalon FIFOed UART (neither 16550 Opencore Uart) component but is how Nios handle interrupt in not edge level sensitive manner (clearly using Internal Interrupt Controller).
Anyway if somebody is interested I found some tricky to use within interrupt service routine that solved the problem. Feel free to contact me if somebody is interested. :)
Ciao,
Paolo
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HI
I have the same problem and would need help to solve it.
Regard.
Honored Contributor
