Messages in this thread | | | Date | Tue, 18 Mar 2003 19:20:13 +0100 | From | Felix Domke <> | Subject | Re: IDE 48 bit addressing causes data corruption |
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Alan Cox wrote: > LBA48 support and UDMA100/133 support are unrelated to one another. > There are controllers with one or the other, eg the older ALi can do > UDMA133 but not LBA48
OK, looks bad for me.
Just for my interest:
Why does a certain IDE controller not support LBA48?
I always thought an IDE controller isn't more than some ISA-styled bus with 3 address lines, 2 chip selects and special stuff for DMA-transfers, together with very special timing generators for PIO-modes.
Whats the problem with these controllers? LBA48, i thought, isn't more than writing the LBA-registers twice (because of the FIFO), and using different commands for reading/writing (the _EXT functions).
felix
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