On Thu, Jan 20, 2000 at 05:40:07PM +1100, Michael Hosemans wrote:
> Hello All,
>
> I keep getting the following message apearing on the console, and I dont know why
>
> ttyS1: 1 input overruns
> ttyS1: 14 input overruns
> etc.
>
> on the screen, ttyS1 is the port I have the modem plugged into, but I do not know why
> I am getting the message.
>
> Ideas, suggestions, solutions greatly appriciated.
You might need to turn on hardware flow control in pppd
or minicom or what ever comms program you are running,
as well as the modem.
Theres a description of overruns in /usr/doc/HOWTO/Text-Terminal-HOWTO.gz
(at least thats were its located in my system.)
Heres a bit from it.
...8<....
10. Flow Control (Handshaking)
Some terminal manuals call "flow control" handshaking. Flow control
is to prevent too fast of a flow of bytes from overrunning a terminal,
computer, modem or other device. Overrunning is when a device can't
process what it is receiving quickly enough and thus loses bytes
and/or makes other serious errors. What flow control does is to halt
the flow of bytes until the terminal (for example) is ready for some
more bytes. Flow control sends its signal to halt the flow in a
direction opposite to the flow of bytes it wants to stop. Flow
control must both be set at the terminal and at the computer.
There are 2 types of flow control: hardware and software (Xon/Xoff).
Hardware flow control uses a dedicated signal wire while software flow
control signals by sending Xon or Xoff control bytes in the normal
data wire. For hardware flow control, the cable must be correctly
wired.
...8<...
--
chesty
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