Re: ISDN Support
Dave Cinege writes:
> >
> >Until recently I just used the built-in serial ports, which are 16650a
> >limited to 115000 bps. I have recently bought a Byte Runner card and
> >am talking to the Bitsurfr at 230400 bps. Have I noticed a big
>
> Ahhhhaaa! And you are using this with linux? Are you sure it is opening the
> 16650 at 230K?
>
> >difference? No. I've started trying some tests, and will switch back
> >to 115000 and see if it I can measure any difference. There are
> >typically delays at so many points its hard to get consistent results.
> >Subjectively (very!) 2 channels are faster than 1, but not twice as
> >fast.
>
> They sure are....maybe the serial ISN'T opening past 115K.
>
Well, I *think* so. How can I tell? I use setserial with spd_cust
and a divisor of 1 with the card jumpered to a base of 3.6864 Mhz;
this is supposed to produce 230.4K. Before doing that, using spd_vhi
giving 115000 bps I tell the Bitsurf the speed is now 230400. I then
switch speeds and the bitsrfr responds. It no longer talks to me if I
talk to it at 115000. In fact, it often resets when I do.
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