[expert] zenith monitor scan frequencies needed

[Daniel Woods]

I picked up an old Zenith monitor (model ZCM1492BA1).
It does not list in Xconfigurator and so I am having
a hard time getting it right.  I used an 8514 monitor
at 640x480, but I still can't see part of the top and
bottom of the X-windows.  Even though an 800x640 test
passes, it gets reset to 640x480.  The on-board
video card is a Sis620 8MB (I set to 2 or 4 for testing).

Anyone know the scan frequencies for this monitor
or which monitor setting will best fit it ?
Is there a monitor listing database on the internet ?

Thanks... Dan.