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Old 01 May 2015, 13:30   #747
Toni Wilen
WinUAE developer
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 43
Posts: 20,647
Originally Posted by Asle View Post
I can't seem to be able to run Jukebox 2 musicdisk by Dreamdealers (1991)
Another "works only accidentally".. It tries to check if INTREQR has COPER interrupt request bit set but it actually checks DSKSYN bit. (btst #4,INTREQR vs btst #4,INTREQR+1)

It already works if KS is 2.0+ because it uses disk wordsync feature but on real hardware it also works under older versions because wordsync contains zero value after power up that causes hardware to detect wordsync condition immeditely when disk dma has been started. (Currently emulation ignores this condition).
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