> Unfortunately it requires some special characteristics in the board > schematic, to not risk destroying the chipset. > > "Warning: please do not try to use SF100 directly on the application > system if the scenario is not in the above two cases." > > ..from their manual. I agree with them, it could be dangerous to > drive the SPI chip while it's connected if you don't know exactly how > it is connected and that it really is safe on that particular board..
The only thing that is required is that they can safely pull the HOLD# pin to ground. Any sane design will have a pull-up resistor on that line (and most other SPI lines, for that matter). That said, there probably _are_ boards that do not have a sane design. Such a shame. [Oh, it obviously also doesn't work if the chipset or the motherboard design uses HOLD# for something else already. This isn't commonly done though]. Aaaaaanyway... It is really simple to build a device like this yourself for a few bucks. SPI flash has many nice characteristics. Segher -- linuxbios mailing list [email protected] http://www.openbios.org/mailman/listinfo/linuxbios
