Messages in this thread | | | From | "Giampaolo Tomassoni" <> | Subject | R: How to avoid serial port buffer overruns? | Date | Thu, 17 Aug 2006 02:15:29 +0200 |
| |
> OK, thanks. FWIW here is the serial board we are using: > > http://www.moschip.com/html/MCS9845.html > > The hardware guy says "The mn9845cv, have in default 2 serial ports and > one ISA bus, where we have connected the tl16c554, quad serial port." > > Hopefully Ingo's latency tracer can tell me what is holding off > interrupts.
That may be an interrupt-sharing issue: quad port often use at most two irq lines and, FWIK, ISA irqs are edge-triggered, not level-triggered. Are you tring to use two MIDI ports at the same time?
Giampaolo
> > Lee > > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |