At 19:21/07/Mar, Wes Newell (1:124/7028) said:
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RC>> Very good point.  I didn't think about that aspect at all. :-)
WN> Not really as each IRQ will fetch 8 bits instead of 1. And I'm not sure 
Wes, the UART generates an IRQ when it has a whole byte ready - it doesn't 
generate interrupts for each bit received.
WN> that the bytes aren't buffered in the modem and then send with X number 
of 
WN> bytes per IRQ. I'm pretty sure that the port will except more than 1 byte 
WN> per IRQ.
The modem doesn't have anything to do with IRQs.  It does buffer the data, 
and it sends it _serialized_ to the UART at the port rate.  There is _no_ IRQ 
activity on the "serial" side of the UART.
WN> I think one of the ZyXEL modems have a printer port connection but I 
WN> haven't looked into it.
If you did, you'd see nothing but pins. :-)
Rick
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