Subject: Re: alphastation serial @ 115200
To: None <firstname.lastname@example.org>
From: Thor Lancelot Simon <email@example.com>
Date: 09/20/1999 21:59:28
On Mon, Sep 20, 1999 at 06:22:28PM +0200, Anders Magnusson wrote:
> > Sadly, the OSF/1 palcode throws away lots of nice alpha interrupt handling
> > hardware. All the cpu's provide nice hardware support for 15 different
> > software interrupt requests, but the osf/1 palcode throws every last one
> > away.
> I assume that the palcode in VMS mode should support that; because
> VMS needs it :-) What is the difference in how the palcode works under
> VMS and OSF/1?
That might be good, but something _else_ is still wrong with the serial
ports on NetBSD/alpha.
Before 'soft interrupts' went in for the serial ports I could get 57600
on my AS200/233 with only the occasional dropped character. I've been
having trouble at 115200 recently. After reading this thread I decided
to arrange so that I'd get essentially no other device interrupts and
retry things at 57600 to see if they were better or worse.
They're much, much worse. Receiving a 1MB file at 57600 into /dev/null
I got *dozens* of overflows while the only other interrupts on the box
were from the clock. Something is Wrong.
Thor Lancelot Simon firstname.lastname@example.org
"And where do all these highways go, now that we are free?"