> That is certainly interesting, but I guess I still subscribe to Bill S's
> theory that it is something to do with the sense pins.  The monitor and all
> the display cards support 640X480@66 Hz, but your multiscan monitor has the
> pins set differently from the old Hi Res RGB monitor that supported that
> format and no others.  Therefore none of the older drivers understand your
> monitor and sometimes think they can't use it.

I bet what they did was something so that the Multiscan would _look_
like a 640x480@66 Hz monitor for most cards, but would be detectable
as different for newer machines. The IIsi was in the middle in that
it knew how to check for diodes (which previous ones didn't), but it
didn't know about the multisync. So it neither got fooled into doing
the right thing, nor knew what to do. :-)

Take care,

Bill