R: How to avoid serial port buffer overruns?

> 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
> 
> 
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  • Re: How to avoid serial port buffer overruns?
    • From: Lee Revell <[email protected]>

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