Removing Glamo from GTA02 (Was: Welcome)

NeilBrown neilb at
Mon Apr 20 00:34:20 CEST 2009

On Mon, April 20, 2009 4:12 am, Rask Ingemann Lambertsen wrote:
>    That leaves g2). We basicly have two options:
> 1) Use the 2442's unused SPI interface 0 for MMC/SD(HC) cards. Supposedly
> this can be done. The AR6001 can then remain on the 2442's SDIO interface.

According to wikipedia (Secure_Digital_card), SPI is optional for
microSD, so this might not work.

> 2) Use the 2442's SDIO interface for MMC/SD(HC) cards. The AR6001 will
> then
> connect to the unused SPI interface 0 instead. Werner made the latter work
> and the former works on the GTA01.
>    The SPI interface is slower than the SDIO interface, so which to choose
> depends on which of MMC/SD(HC) or WLAN you think is most important. I'd go
> with 2) since with a page-on-demand system, fast disk I/O is needed for
> low
> user interface response times and there are already complaints in that
> area
> while we have yet to hear anybody complain about slow WLAN (which also
> isn't
> used as much?).

I agree that speed is more important for the SD card than the WLAN,
so I support your preference for 2.


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