3/80 SCSI cables

[convex!datri at uunet.uu.net]

>  +------------------------+------+  <= ribbon cable
>  |                        |      |
>  |                        |      header, connect to internal drive
>  |                        header, connect to board
>  Old-style Sun connector, connect to shoebox cable

On a related issue:  the docs I've seen say that mixing embedded and
adaptec/emulex SCSI drives on the same 3/80 is "not supported".  Any ideas
on what this really means?  If you try, do you get even stranger unit
numbers than before?