Jasen Betts wrote in a message to Pascal Schmidt:

 JB> I'm fairly sure I've seen up round 500 lines on a PAL TV
 JB> this was interlaced  with a 50Hz vertical rate so horozontal sharp
 JB> edges didn't look good, given the 25 hz refresh rate... signal
 JB> source was an Amiga 500.

I'm wondering now if it'd be possible to simulate these various systems for
purposes of comparison if you were using a computer as a signal source and
a monitor to display?

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