Honestly, I was thinking of getting the adapter I linked to and getting the reverse adapter and soldering the exact serial flash chip that is currently on my motherboard onto the reverse adapter. Then I could have a few of those. Because that have the exact same chip, I'd hope that I could just plug it in and expect it to work.
wt On Fri, Jun 19, 2009 at 5:37 PM, Urja Rannikko<[email protected]> wrote: > On Sat, Jun 20, 2009 at 02:32, Peter Stuge<[email protected]> wrote: > >> Note that only MMC (the very old cards) use 1-bit SPI. Any newer card >> uses a wider interface, which means even more complex translation >> logic. > > Although it doesnt matter, every SD card must support 1-bit SPI (by spec). > >> And even if the translation state machine would be fast enough, if >> e.g. it runs off it's own clock at maybe 100MHz instead of whatever >> is on SPI, the consumer grade flash memory cards can themselves have >> longer response times than what is allowed by the mainboard SPI. >> >> MMC has unlimited response times, as an example. Ie. the card can >> take as long as it wants to respond, at least for writes. >> >> The cards can also have rather complex voltage requirements. > > Complex = 3.3V? (depends on the card though) > >> All in all, a ton of work, and even doubtful that it could succeed. >> > > I tought of this for a while (after i sent that message) and, we'll i > doubt its not even possible directly, it would need an ASIC with some > serious caching to work, if possible. > > -- > urjaman > > -- > coreboot mailing list: [email protected] > http://www.coreboot.org/mailman/listinfo/coreboot > -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
