Subject: Re: z50 pointer support...
To: Castor Fu <>
From: Greg Hughes <>
List: port-hpcmips
Date: 07/23/2001 20:21:01
On Mon, 23 Jul 2001, Castor Fu wrote:

> On Mon, 23 Jul 2001, Greg Hughes wrote:
> > I've been meaning to make the code available except that I'm encountering
> > buffer overrun errors on the DSIU port of the z50 which I cannot seem to
> > eliminate (thanks to the 1-byte buffer on the DSIU port - blech!).  Most
> > problematic if the machine is doing something while you're moving the
> > mouse cursor (e.g. PCMCIA activity w/ my MicroDrive).
> >
> > I've tried setting the interrupt priority of the DSIU to that of the other
> > BIO devices in the system and was met with little improvement.
> Do you mean IPL_BIO or IPL_SERIAL?  I thought that the PCMCIA should
> be much lower priority than the serial port for just this sort of
> reason.

I don't recall IPL_SERIAL -- thought it was IPL_TTY -- but it's been a
while since I looked at the code.  However, I believe the errors happen
regardless of the interrupt level I assign the DSIU.  I'll change it back
to the serial interrupt level just to see if it makes a difference though.

- Greg