[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: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
> 
> 
> 
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