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Old 20 October 2014, 09:52   #3
Toni Wilen
WinUAE developer
 
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 42
Posts: 19,946
It happens because cd device always prefetches next 16 CD sectors and each sector causes level 2 interrupt which can be only cleared by writing to Akiko interrupt register.

I don't know if there is any official method, perhaps sending CMD_STOP or CD_MOTOR IO command stops it or at least IO call returns only after prefetch has finished.

Some CD32 games have CPU busy wait..
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