Re: Serial port/Multia troubles.
Andreas Kostyrka (andreas@rainbow.studorg.tuwien.ac.at)
Wed, 23 Oct 1996 18:00:42 +0200 (MET DST)
On Wed, 23 Oct 1996 jestabro@amt.tay1.dec.com wrote:
> Are you perhaps using an *old* kernel, ie 1.3.90 or so? There was a problem
> fixed after that, I believe, that could cause such symptoms.
Same with 1.3.90 or 2.0.18. (I'm using the same kernel as on Intel,
meaning just the standard Linus-Kernel.)
> By slow, do you mean each character takes a long time, or does the input
> or output seem to burst, say 10-16 characters at once, then a long delay?
Yep it is slow and then usually comes in bursts.
> The serial port DB-25 on the UDB is really *2* serial ports; if the cable
> you hook to the modem passes more than the absolute minimum necessary lines,
> the modem may be getting confused by the extra lines that are really COM2.
I thought about this, and I've also tried using two converters 25->9 and
9->25 pins to prevent this. Didn't help it :(
The problem seems to be seldom triggered, but I've got in the course of
some months mails from some guys who have similiar problems. They usually
solved it by putting a Intel box beside the AXPs, that let the Intel box
handle modems.
Andreas
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