Re: kdb questions

[Keith Owens <kaos@xxxxxxxxxxxxxxxxx>]

On Wed, 12 Jul 2000 16:44:43 -0700, 
"Dunlap, Randy" <randy.dunlap@xxxxxxxxx> wrote:
>With kdb (i386), are there ways to
>1) read a physical memory address or
>2) read from an io port?

There are no builtin commands to do this, mainly because each bit of
hardware has different rules about when ports can be read, e.g. write A
to port X before you can read B from port Y.  Also kdb disables all
interrupts which makes it difficult to do any I/O.  My current optinion
is that this problem is best dealt with by the writing your own little
kdb module to provide the hardware specific commands for the driver
being debugged.