Thomas Witek

Testing in Windows x64 3.10 r46229, default settings. Active loud speakers at 50% volume over normal listening volume. Starting x64sc, I hear a low noise sound. Goes away when i close x64sc. Fragment size Medium: At buffer size 10ms, the noise starts sounding metallic. Emulation speed jumps around between 91% and 100%. In a demo everything is running in slow motion. Back at 11ms, all is normal again. At size 8ms, the noice changes to a higher pitch. At 5ms, the pitch goes very high. x64sc emulation...

go ahead and close it

A quick check with 3.9 r45515 and Foxit 2025.2.1.33197: no more error.

In a file path Windows can handle it, or VICE would not work at all (see log file extract below). But not in a file:/// URL. Maybe because of security reasons. from logfile: Loading system file C:\Users\user\Desktop\GTK3VICE-3.5-win64\GTK3VICE-3.5-win64\bin\..\C64\kernal'. Loading system fileC:\Users\user\Desktop\GTK3VICE-3.5-win64\GTK3VICE-3.5-win64\bin..\C64\basic'. Loading system file C:\Users\user\Desktop\GTK3VICE-3.5-win64\GTK3VICE-3.5-win64\bin\..\C64\chargen'. Loading system fileC:\Users\...

I mistyped the URL. It's all forward slashes. file:///d:/emulatoren/c64/emus/gtk3vice-3.5-win64/bin/../doc/vice.pdf When i run the URL from command line, i also get a Windows error message: start file:///d:/emulatoren/c64/emus/gtk3vice-3.5-win64/bin/../doc/vice.pdf "... could not be found. Make sure you entered the name correctly...". When i remove the /bin/../ it's working: file:///d:/emulatoren/c64/emus/gtk3vice-3.5-win64/doc/vice.pdf Looks like /../ is not valid in a URL in Windows.

Onboard Soundchip on Gigabyte Z170-HD3P-CF: Realtek ALC887 codec In device manager: Realtek(R) Audio driver vendor Realtek Semiconductor Corp. driver date 15.05.2019 driver version 6.0.8703.1 c:\windows\system32\drivers\rtkvhd64.sys file version 6.0.8703.1 built by: WinDDK

Is there any documentation about this "Audio leak emulation"? There are no "pop" sound after starting x64sc. Only after pressing alt+shift+f12 several times. And they are gone after pausing the emulator or resetting the audio otherwise.

Update: after deleting the %appdate%\vice\vice.ini, the behavior changed. default (26ms / medium fragments, 44.1kHz): emulation runs at 95.9% 26ms, very small fragments: 95.9%, no change. 30ms: around 95% 30ms, 48kHz: swinging between 94.9% and 95.5% 40ms, 44.1kHz: 100% 40ms, 48kHz: 93.7% starting at 50ms, 48kHz mostly 99.9%, sometimes 100%