Re: Issue with /usr/src/sys/arch/i386/stand/lib/gatea20.c

[David Laight <david%l8s.co.uk@localhost>]

On Tue, Jun 21, 2005 at 06:49:04PM +0200, Marcin Jessa wrote:
> Hi.
> 
> On Tue, 21 Jun 2005 16:11:17 +0200
> Jukka Salmi <j+nbsd%2005.salmi.ch@localhost> wrote:
> 
> > Marcin Jessa --> current-users (2005-06-21 15:50:37 +0200):
> > > Hi.
> > > 
> > > I have WRAP boards which do not have a keyboard controller. 
> > > The system stops up when booting those boards becouse of that.
> > > It seems like the /usr/src/sys/arch/i386/stand/lib/gatea20.c file is the
> > > one responsible for that. 
> > > Would someone knowledgable take a look at the file and maybe fix that 
> > > part?
> > 
> > Have you already tried this patch:
> > 
> > http://mail-index.netbsd.org/netbsd-users/2005/06/20/0028.html
> 
> No I have not but I will now. Thanks Jukka.
> But if it works, why the heck isn't it commited?

Because the code that is there was added for a reason - probably to
make some other motherboard work properly.  Unless and until you
understand the full ramifications of such a change, you are likely
to break the boot code on some other platform.

The A20 gate is a horrid hack, and it is probably difficult to find any
reasonable amount of documentation about it.

        David

-- 
David Laight: david%l8s.co.uk@localhost