RE: [OpenBIOS] l440gx+ nvram writing ...

[Wallace I. Kroeker]

I found this in the P6 Hardware Developer's Manual

A.1.49 SMI# (I)
The SMI# (System Management Interrupt) signal is asserted asynchronously by
system logic. On
accepting a System Management Interrupt, processors save the current state
and enter System
Management Mode (SMM). An SMI Acknowledge transaction is issued, and the
processor begins
program execution from the SMM handler.

I am guessing SMI_L is a system management Interrupt and the SMI Acknowledge
is what you will be trying to do.

More digging required.

Wallace
> -----Original Message-----
> From:	Ronald G. Minnich [SMTP:[e-mail]]
> Sent:	Monday, February 07, 2000 11:40 AM
> To:	[e-mail]
> Subject:	[OpenBIOS] l440gx+ nvram writing ...
>
> more.
>
> You can enable/disable smi_l in the bios. I'm going to check that today.
> If smi_l is disabled, your OS will never know that the BUD asserted an
> interruptt when you tried to write the BIOS>
>
> The remaining question, of course, is what you're supposed to do with that
> interrupt, but that's next.
>
> it's rather amazing, but intel is shipping a server motherboard that
> REQUIRES DOS to be upgraded. You have to wonder sometimes, what are people
> thinking? The only exisiting SMI_L interrupt handler is in the BIOS!
>
> ron
>
> To unsubscribe: send mail to [e-mail]
> with 'unsubscribe openbios' in the body of the message

-
To unsubscribe: send mail to [e-mail]
with 'unsubscribe openbios' in the body of the message

l440gx+ nvram writing ...

[Thierry Deval]

Just to clarify :

SMI# , SMI_L , ~SMI or SMI with a long dash above it (I can't draw it here) are
some digital electronic notations to mean a SMI signal which is active LOW (OV).

my .02

On 07-Feb-00 Wallace I. Kroeker wrote:
> I found this in the P6 Hardware Developer's Manual
>
> A.1.49 SMI# (I)
> The SMI# (System Management Interrupt) signal is asserted asynchronously by
> system logic. On
> accepting a System Management Interrupt, processors save the current state
> and enter System
> Management Mode (SMM). An SMI Acknowledge transaction is issued, and the
> processor begins
> program execution from the SMM handler.
>
> I am guessing SMI_L is a system management Interrupt and the SMI Acknowledge
> is what you will be trying to do.
>
> More digging required.
>
> Wallace
> > -----Original Message-----
> > From:        Ronald G. Minnich [SMTP:[e-mail]]
> > Sent:        Monday, February 07, 2000 11:40 AM
> > To:  [e-mail]
> > Subject:     [OpenBIOS] l440gx+ nvram writing ...
> >
> > more.
> >
> > You can enable/disable smi_l in the bios. I'm going to check that today.
> > If smi_l is disabled, your OS will never know that the BUD asserted an
> > interruptt when you tried to write the BIOS>
> >
> > The remaining question, of course, is what you're supposed to do with that
> > interrupt, but that's next.
> >
> > it's rather amazing, but intel is shipping a server motherboard that
> > REQUIRES DOS to be upgraded. You have to wonder sometimes, what are people
> > thinking? The only exisiting SMI_L interrupt handler is in the BIOS!
> >
> > ron
> >
> > To unsubscribe: send mail to [e-mail]
> > with 'unsubscribe openbios' in the body of the message
>
> To unsubscribe: send mail to [e-mail]
> with 'unsubscribe openbios' in the body of the message

----------------------------------
E-Mail: Thierry Deval 
Date: 07-Feb-00
Time: 22:17:31

Prime Objective
   OpenBSD - Linux - Windows NT
 OO Development - Network Systems
----------------------------------
-
To unsubscribe: send mail to [e-mail]
with 'unsubscribe openbios' in the body of the message

l440gx+ nvram writing ...

[Ronald G. Minnich]

On Mon, 7 Feb 2000, Thierry Deval wrote:
> Just to clarify :
> SMI# , SMI_L , ~SMI or SMI with a long dash above it (I can't draw it here) are
> some digital electronic notations to mean a SMI signal which is active LOW (OV).

yes, it's odd that in some intel documentation they abandon the # notation
for _L notation. arrrg.

ron

-
To unsubscribe: send mail to [e-mail]
with 'unsubscribe openbios' in the body of the message