>    Ken> What's wrong with DDB?
>
>I tried that first.  Frankly I'm awfully confused because such obvious
>things seem to fail for me.  When I turn on options DDB and put
>in pseudo-device ddb, there is a reference to ddbattach generated in
>ioconf.c.  There is no definition of ddbattach anywhere in my source
>tree, which is netbsd-current, up to about a week ago.

Ah ... get rid of the "pseudo-device ddb" declaration.  All you should need is
"options DDB".  I know for a fact this works on the i386.

--Ken