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 [e-mail]:
> 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).