>So a given controller (wide or narrow) may be able to switch between
>single and differential SCSI, but a given SCSI bus has to be all one or
>the other.
        NCR have a card which converts differential to single, thus using
this you can effectively mix types. They are however still all single on
the controllers cable. Presumeably the NCR card can go the other way aswell
but I am not positive.
        Donal.

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