On Tue, Oct 10, 2000 at 02:19:17PM +1100, Keith Owens wrote:
> > The serial ports of all SGI systems support several standard rates
> > up through 38400 bps (see termio(7) for these standard rates).
> > The serial ports on O2, OCTANE, Origin2000, Onyx2 and Origin200
> > systems also support
> > 31250 57600
> > 76800 115200
> FWIW, O2's may be rated at 115200 but I can kill my O2 by feeding it
> the output from a Linux serial console at 115200. No diagnostics, just
> a solid machine hang.
The Origin's IOC3 16550 can go even higher rates at low interrupt load
due to it's higher crystal frequency and a NIC-like DMA descriptors.
We just don't do it yet in the Linux driver ...