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Rockbox mail archiveSubject: Re: Assembly optimization taken out (was Re: File system corruption)Re: Assembly optimization taken out (was Re: File system corruption)
From: [IDC]Dragon <idc-dragon_at_gmx.de>
Date: Mon, 16 Feb 2004 18:04:11 +0100 (MET) > However, it seems like we have to explicitly select the faster PIO mode > (3 or 4) with the SET FEATURES command. The ATA spec says that devices > supporting PIO mode 3 and 4 shall power up in mode 0, 1 or 2. That *may* > mean that the IORDY pin isn't used, since the IORDY isn't mandatory in > those modes. > > I have added some extra info in the Disk Debug screen, so we can see > which PIO modes the disk supports, and also the required timings. Based > on this info, we should be able to dynamically select which > optimizations to use. If we are lucky, all it takes is to set mode 4 > with the SET FEATURES command and always use the aggressive > optimizations (provided that the HD support mode 4). Sound very plausible. I can't contribute much to the discussion right now, am on a business trip in Taiwan. My Rockbox-hands are bound... Jörg -- GMX ProMail (250 MB Mailbox, 50 FreeSMS, Virenschutz, 2,99 EUR/Monat...) jetzt 3 Monate GRATIS + 3x DER SPIEGEL +++ http://www.gmx.net/derspiegel +++ _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockboxReceived on 2004-02-16 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |