Subject: Re: VAX 8200 MP spinup code.
To: Anders Magnusson <>
From: Jason R Thorpe <>
List: tech-smp
Date: 06/10/2000 09:59:02
On Sat, Jun 10, 2000 at 05:18:56PM +0200, Anders Magnusson wrote:

 > It cannot do printf's from the slave CPUs yet. A VAX CPU has an internal
 > register that is the console output that is only accessible on the local
 > CPU, so printf on a slave CPU writes the output out on the slave CPU 
 > console (which is not what is wished). I don't know yet how this shall
 > be handled.

Hm.  On the slave, you might have to write into a ring buffer
and then send an IPI to the master to have it output the contents
of the ring buffer onto the console.  This could be done via the
cnputc routine.

        -- Jason R. Thorpe <>