[LinuxBIOS] GA-M57SLI-S4 continuity test on the second plcc socket.

Stefan Reinauer stepan at coresystems.de
Wed Mar 28 16:52:49 CEST 2007

* Beth <beth.null at gmail.com> [070328 11:22]:
> Maybe are unused, I don't know, and worst, I dont understand on the
> datasheet of the chip what means the three names that are given to the
> pins, each for these columns: A/A Mux, LPC, FWH. If someone can
> clarify it ...
The PMC chip can be used in two operation modes, LPC and Firmware Hub.
No idea what A/A Mux is. Depending on the operation mode, the pins have
different meanings.

> Another thing is something that a friend of mine says yesterday: why
> instead of removing the chip, take and desolder only the vcc pin, put
> a micro-switch on it, solder another chip on top of the existing and
> do the same with its vcc pin, so with two micro-switches you can
> select wich bios chip use. What do you think about this solution?. 

You also need to do this for CE and CS. 

No idea how hard or easy it is to desolder single pins instead of the
complete chip. It is a good idea though!

coresystems GmbH • Brahmsstr. 16 • D-79104 Freiburg i. Br.
      Tel.: +49 761 7668825 • Fax: +49 761 7664613
Email: info at coresystems.dehttp://www.coresystems.de/

More information about the coreboot mailing list