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Toni Wilen · 12 January 2021, 19:09

This behavior is not yet fully known. But it seems two waits are needed to be 100% sure there are no glitches. (=WAIT ends too early)

A1000 (due to bltbusy wait bug which also affects copper blitter waits) can glitch more easily with only single WAIT. OCS/ECS can glitch in some special situations (which no one has managed to duplicate with simple test code so far..). AGA seems to have fixed it and single WAIT works fine.

12 January 2021, 19:09	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,516	This behavior is not yet fully known. But it seems two waits are needed to be 100% sure there are no glitches. (=WAIT ends too early) A1000 (due to bltbusy wait bug which also affects copper blitter waits) can glitch more easily with only single WAIT. OCS/ECS can glitch in some special situations (which no one has managed to duplicate with simple test code so far..). AGA seems to have fixed it and single WAIT works fine.