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Old 19 March 2015, 19:47   #736
Toni Wilen
WinUAE developer
 
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 42
Posts: 19,539
Next beta will fix Seven Seas overscan scroll glitch.

Fix is a hack, it checks in hsync handler code if following cycle copper would write to BPLCON1 and if it does, it internally does hidden copper fetch 1 cycle early and stores it for later use, this way denise bitplane shifter emulation sees the correct new value before it is too late.

This also confirms glitch emulation has to be correct because demo's workaround does now work perfectly in emulation
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