I have run both a DC-390U (ultra) and a DC-390F (ultra wide) under FreeBSD
without any real problems.  The U isn't wide, but still uses the 875
chipset. 

Note that the Tekram's BIOS doesn't like disks partitioned using FreeBSD's
dedicated mode and will hang on boot if it sees one.  

The only problem I had was when attaching a wide drive to the narrow
controller (390U) , the code kept thinking it could talk over a wide bus
(the chip on the contoller is a 875, which is wide, the drive is wide, but
the connection is narrow) and blew up horribly.  To work around this I
just used the appropriate define to force the NCR driver to only talk
narrow. 

On Mon, 26 May 1997, Dave Huang wrote:

> Hi, I was thinking of getting some sort of 53c875 based card, probably
> either an Asus SC875 or Tekram DC390F, and I wanted to make sure that the
> ncr driver works well with it. I'm running NetBSD, but since it uses the
> FreeBSD driver, everything should be the same :) I'll be running a 2gig
> Wide Quantum Atlas and a 4gig Wide Atlas off the card... 
> 
> Any recommendation on whether I should get the Asus or the Tekram? I
> notice the driver has some code to read the Tekram's EPROM; what does that
> do? :)
>