I'm having problems defining screenmodes in CGX4. If I take an existing high-res screenmodes, for example 1280x1024 which tests fine in 8 bit, and increase the colour depth to 24 bit, I get an error stating "Can't open test screen!". If I take an existing 24 bit screenmode, for example 800x573, which tests fine, and increase the resolution to 1280x1024, when I test it I either get the same error as before, or the test card comes up with the horizontal resolution changed to something smaller, or the monitor goes out of range (can't remember the exact circumstances under which each of these happened).
Can anyone give me some advice about the correct way to do this?
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moto