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UIDE and AHCI support (Miscellaneous)

posted by DOSferatu(R), minneapolis, mn usa, 01.06.2010, 23:50

> you are mostly right: I wouldn't expect any speed improvements for *disks*
> either.
> unfortunately CD/DVD's are not handled by INT 13, but need it's own
> driver,
> and the current CD/DVD driver(s) don't operate with AHCI

ooh, ugh, yeah. ok, that's a whole new layer of ugly.
I suppose even with most mainboard's AHCI feature enabled which patches INT 13 to give you HDD support, you're still SOL with CD drives...

So you'd have to have a CDROM driver that can issue ATAPI packet commands down AHCI. I've never done much with packet commands, other than eject and load disc commands, but I think that a lot of the basic stuff I have, like sending FIS packets down to the device would still be applicable. I'm sure it's doable. Had I a 2nd or 3rd lifetime of freetime, I would be all over attempting to do something with that.


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