I would guess that your adapter just isn't working. If you hook a VGA monitor up using the Mac 640x480 profile, it will think it's running at 66.7Hz, and the screen will roll. Since it doesn't go away with the other settings, I would guess your adapter is broken. Those machines should be able to output [EMAIL PROTECTED] just fine if given the correct sense code.
> Hi,
>
> I recently received three 68k Macs (IIvx, Centris 650 and Quadra
610).
> Unfortunatly I dont have any Mac monitor. A friend of mine got me this
[...]
>
> The adapter is aparently made by Samsung. It has lots of dip switchs
> built on it to select the resolucion (I believe I tried all the
variations).
> The following resolutions are avaiable:
>
> 640x480 @60Hz
> 640x480 @67Hz
> 832x634 @75Hz
> 1024x768 @75Hz
> 1152x870 @75Hz
> Multisync 832 (default)
> Multisync 1024
> Multisync 1152
>
> I tried the adapter on the builtin monitor port of the three Macs. None
> worked. One of them has an offboard video card (Radius?), it didnt work
> either.
>
> Any idea on what's happening? Is the adapter kaputt? Should I do
> something on the Mac or on the monitor to make both work together?
>
> Thanks in advance,
>
> Humberto
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