In message <20040312223156.GA2606@antioche.eu.org>, Manuel Bouyer writes:
>Hum ... it switches to command phase when the controller doesn't expect it.
>Can you rebuild a kernel with
>#undef SIOP_DEBUG_INTR
>changed to
>#define SIOP_DEBUG_INTR
>in sys/dev/ic/siop.c, and send me the boot messages ?

I've worked around the problem by installing another (ATAPI) CD-ROM, which
is much faster and more convenient (no caddy, bootable) anyway.  Adding it
back on the same controller would be laborious.  :-(

>Also, do you have a way to try this drive with another kind of controller, and
>see if it negotiate sync parameters properly ?
>I suspect it switched to command phase while the controller was sending the
>SDTR message.

I can add it back on another controller, but its priority has gone down
significantly for me.  I'll let you know when I get around to it.