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Old 31 December 2012, 18:01   #20
Toni Wilen
WinUAE developer
 
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 42
Posts: 20,484
Thanks.

So it is as simple as:

hsync: every other line, not synced to NTSC long or short lines.
vsync: if genlock is connected to interlaced signal: long fields only, if non-interlaced: both fields.

Emulation still needs to handle genlock forced odd/even toggle in non-interlaced modes before timing is exactly right.

Also technically timing shouldn't be exactly right because genlock source was usually VHS video cassette
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