Subject: Re: 40x CD-R without UDMA?
To: Manuel Bouyer <>
From: Daniel Carosone <>
List: current-users
Date: 12/18/2002 10:49:36
On Tue, Dec 17, 2002 at 09:57:59PM +0100, Manuel Bouyer wrote:
> DMA2 can do 16MB/s, if my math is right 40x is 12MB/s (and 48x is 14.4)so it
> can, but it has better be alone on the bus.

I think it's only 6 - I understood "1x" to be 150K/s. I wasn't sure
about dma2, though.

So it's within the bounds of possibility that someone would make
such a drive - just surprising, not self-contradictory.

> > The other thing to note is that after the probe, the pc's drive
> > LED comes on and stays on - until the burner is used the first
> > time.  It rather looks like something is not completing properly
> > during the probe. I tried it as master alone on the bus too, no
> > difference.
> I used to have this on my PCs (with ATAPI ZIP too) and it was fixed by
> sys/dev/ata/ata.c rev 1.17 for me.

I forgot to mention a couple of other things that might be pertinent:

 - the machine in question is running current as of a month or so
   ago; though I don't have access to it now to check, if 1.17 is
   in 1.6 and still in current today, then that machine will be
   running the same rev.

 - pciide0 at pci0 dev 0 function 1: Silicon Integrated System 5597/5598 IDE controller (rev. 0xd0)