English Amiga Board - View Single Post - Reducing CPU usage when emulation window is inactive

Toni Wilen · 24 June 2016, 21:54

It isn't that simple. When it is finally known that display has changed, about 2/3 of the display emulation is already done.. Final bit (planer to chunky, sprite merging and conversion to host color depth) is very simple part.

Don't ever try to compare Amiga with some basic system that does not have anything like a copper or hardware sprites.

EDIT: RTG modes already use host MMU write detection trick. It can only work with RTG modes because they are 100% predictable, no copper tricks and splits.

24 June 2016, 21:54	#3
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,517	It isn't that simple. When it is finally known that display has changed, about 2/3 of the display emulation is already done.. Final bit (planer to chunky, sprite merging and conversion to host color depth) is very simple part. Don't ever try to compare Amiga with some basic system that does not have anything like a copper or hardware sprites. EDIT: RTG modes already use host MMU write detection trick. It can only work with RTG modes because they are 100% predictable, no copper tricks and splits. Last edited by Toni Wilen; 24 June 2016 at 22:06.