OK then, here's the Modeline:
Quote:
Identifier "CRT-240p25"
VendorName "Unknown"
ModelName "Unknown"
Option "ConnectedMonitor" "CRT"
HorizSync 5-7
VertRefresh 45-55
DisplaySize 75 56
Modeline "Baird 240" 3.75 560 560 576 624 220 220 232 240 -hsync -vsync
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Which takes advantage of the sub-12MHz dot clock feature of the new nVidia driver.
Below are a few screen shots taken of the 240 line standard in opertion. I used my trusty Tektronix 535A as a display, with a type "O" dual op-amp plugin. Timebase B supplies the line timebase, timebase A ouput is connected to the Y input to provide the frame timebase, and one op-amp is used to turn the 0.7V of video from the RGB combiner into 50V of video to drive the Z input (CRT cathode in this case).
The picture is cut about 2/3rds of the way across, as I couldn't quite get the line timebase frequency right (timebase B doesn't have variable speed - a small tweak is needed to the scope). Flyback blanking is also poor.
Jim.