2007/10/1, Carl-Daniel Hailfinger <[EMAIL PROTECTED]>: > > On 30.09.2007 22:03, Alan Carvalho de Assis wrote: > > Hi Carl-Daniel, > > > > 2007/9/28, Carl-Daniel Hailfinger <[EMAIL PROTECTED]>: > > sic > >> Yes, looking for testers. > >> > > > > Currently I'm off finishing my master degree thesis but I still > > reading LB posts and I want to know if exist some memory size > > limitation on LPC-to-SPI? > > Yes, but it depends on the translation chip. For the IT8176F, we get > exactly 1152kBytes if we can trust the datasheet. I prefer not to trust > it, but so far nodoby has done experiments. > So it needs more some experiments.
> > Today we are limited at 2MB BIOS LPC flash but SPI flash can have too > > many mega bytes. Is possible to use bigger SPI flash using this > > LPC-to-SPI convertion? > > Yes and no. You can still read chips up to 16MBytes by hand, but it is > CPU-intensive. I might write a driver for that in the future, though. > Please note that more than 16MBytes can't be addressed with the SPI > flash protocol because of its limitation to 24bit addresses. > Sure. At SST web site the max. flash size I found is 4MBytes (32Mbits). > If you ever find a SPI flash chip with more than 16MBytes, please tell > me. I'd like to take a look at its data sheet. > I never work with SPI flash. But I think an option is to use 2 chips and select them using chip selects (it needs some hacks). > Carl-Daniel > Cheers, Alan -- ------------------------------------------------------------ | Alan Carvalho de Assis | ------------------------------------------------------------ -- Não importa o que os outros irão pensar, A cura para a infelicidade é a felicidade -- linuxbios mailing list linuxbios@linuxbios.org http://www.linuxbios.org/mailman/listinfo/linuxbios