Messages in this thread | | | Date | Wed, 24 May 2006 09:14:06 +0200 | From | Helge Hafting <> | Subject | Re: Compact Flash Serial ATA patch |
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markus reichelt wrote: > * Alan Cox <alan@lxorguk.ukuu.org.uk> wrote: > > >> On Maw, 2006-05-23 at 04:16 -0600, Russell McConnachie wrote: >> >>> I am not exactly a programmer, I'm sure this can be written much >>> better but for anyone who may run into a similar problem with >>> compact flash. >>> >> Some CF adapters do not include all the neccessary pins for DMA >> because they were designed to be cheap before the idea of CF using >> DMA seemed realistic. >> > > Some CF adapters I've seen included all necessary pins but the pin > connections for DMA were missing. Someone at a slackware mailing list > was having the same problem, and if I recall correctly (better check > specs though) it can be fixed quite easily: > > CF pin 44: disconnect from +V, connect to IDE pin 29. > CF pin 43: connect to IDE pin 21. > > Typical transfer rates increased to about 10-12 MB/s > No more than that? I have a CF card on parallel IDE, hdparm can read 20MB/s from it with the 4GB 100xKingston card I use to boot from. Of course this card was bought precisely for its speed (and size).
Helge Hafting
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