On 11 Jan 2001 eeh@netbsd.org wrote:

>
> 	The main question I have...is the "com" device (and other serial
> 	interface devices) attachable to?  Or is there a better way of doing this?
>
> In order for a device node to allow children to attach
> to it, the device must be a bus node.  To do that you
> need to add `{ }' to he device node in the files file.
>

in /sys/sys/conf/files....I didn't change anything here.

defopt opt_com.h COM16650 COM_HAYESP COM_DEBUG COM_MPLOCK
device com { } : tty
file	dev/ic/com.c			com needs-flag


in /sys/dev/onewire/files.onewire

device onewire
attach onewire at com
file   dev/onewire/onewire.c		onewire


Am I getting close?