Re: [ros-dev] [ros-diffs] [hbelusca] 61875: [NTVDM] - Enable experimental sound support (only PC speaker for the moment, aka. uses beep.sys). - Introduce a #define WORKING_TIMER which aim is to disable the currently problem...

[Timo Kreuzer]

What about reading the current TickCount from the shared user page?


Am 29.01.2014 01:25, schrieb hbelusca(a)svn.reactos.org:
>   Author: hbelusca
>  Date: Wed Jan 29 00:25:43 2014
>  New Revision: 61875
>
>  URL: http://svn.reactos.org/svn/reactos?rev=61875&view=rev
>  Log:
>  [NTVDM]
>  - Enable experimental sound support (only PC speaker for the moment, aka. uses
> beep.sys).
>  - Introduce a #define WORKING_TIMER which aim is to disable the currently problematic
> approximate performance counter value calculation done in order not to call
> QueryPerformanceCounter each time.
>    The problem is that we then compute a number of clock ticks for the PIT, which becomes
> negative, and therefore everything starts to hang.
>    Disabling this code and calling each time QueryPerformanceCounter, fixes everything; we
> gain in precision but we loose in performance...
>    A definitive fix must be found, [TheFlash] !!
>
>  This fixes sound (and hangs) in Advanced NetWars, Dangerous Dave, ElitePlus and Rescue
> Rover (the games that I've tested so far).
>
>