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Old 13 February 2014, 21:30   #26
Toni Wilen
WinUAE developer
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 42
Posts: 20,460
I missed the second page which says "every two fields". I guess technically "normal" rate should work in non-lace modes. (even if it is against the spec)

But Agnus vertical counter is 9 bits (OCS) or 11 bits (ECS). It does not wrap around at the end of field. Perhaps this is what "setting long-field condition" means? There is internal register that stores line where next line should end, even if there is no vsync pulse.
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