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posted by ecm Homepage E-mail, Düsseldorf, Germany, 01.06.2011, 17:55

> I recall the issue now: it isn't supported by NTVDM if the
> DOS app is in protected-mode. It's somewhat funny that the call is
> supported in real-mode, but not in protected-mode, because, IIRC, this API
> was introduced with DPMI.

Ah, yes. So is 16.01 the best method to idle while in protected mode? Switching to V86 mode and calling the working 2F.1680 would probably take too long.

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