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Hi all,
I need to use a special device conected to the other end in a hardware
installed this way:
PC - modem - telephoneline - modem - device.
So.. what is the problem?
The device sends "messages" to the PC of 1 to 4 bytes. and the PC answer
these messages as a slave.
This messages must be answered by the PC aplication as soon as possible, so I
used irqtune to give the highest priority to the serial port.
Sometimes (about once each 50 messages) that fails (takes about 8 seconds to
aplication receive the message) and I think that it could be the PC UART FIFO.
Do you have any hint about disabling the FIFO? Is there any FIFO size
parameter that specifies how many bytes should FIFO have before IRQ is set?
I already monitored the serial wires at the pc port and the delay is inside
the PC. The PC UART is 16550A. This PC has woody distribution installed.
Thanks in advance,
Pedro
