[OpenBIOS] l440gx+ nvram writing ...
Thierry Deval
TDeval at primeobj.com
Mon Feb 7 22:20:37 CET 2000
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:rminnich at lanl.gov]
>> Sent: Monday, February 07, 2000 11:40 AM
>> To: openbios at elvis.informatik.uni-freiburg.de
>> 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 majordomo at freiburg.linux.de
>> with 'unsubscribe openbios' in the body of the message
> -
> To unsubscribe: send mail to majordomo at freiburg.linux.de
> with 'unsubscribe openbios' in the body of the message
----------------------------------
E-Mail: Thierry Deval <TDeval at PrimeOBJ.COM>
Date: 07-Feb-00
Time: 22:17:31
Prime Objective
OpenBSD - Linux - Windows NT
OO Development - Network Systems
----------------------------------
-
To unsubscribe: send mail to majordomo at freiburg.linux.de
with 'unsubscribe openbios' in the body of the message
More information about the openbios
mailing list