[Bug 56260] 16-bit Myst deadlocks when entering Book

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=56260

--- Comment #1 from Fabian Maurer  ---
Created attachment 75971
  --> https://bugs.winehq.org/attachment.cgi?id=75971
Win16 code that it is stuck in

When the deadlock occurs, winevdm uses one thread fully. Attaching the
disassembly that is continuously run. As I see it, it just waits for a variable
to be written. This variable should (AFAIK) be written when the waveOutOpen
callback gets called with WOM_DONE.

Not exactly sure how that is supposed to work with cooperative multitasking,
but I suspect that is an interrupt that allows that to work.