Sound Crackling/Screen Flickering

[qclart]

Issue: Screen flickering in hi-res interlaced mode. Line doubling can be implemented in this core to fix this issue - Chips-fr@518b133

Issue: Sound crackling and stutter occurs regardless of settings applied. I don't believe this an emulation speed issue as the fps is good.

[Chips-fr]

You can try the latest update, sound should be good now...

[apison]

I've tested your update, sound seems a bit better but crackling is still present.
it's a shame because this emulator is the only that works full speed on my underpowered board.
Some times ago I've made a fork of your project and added some useful core options to it and I've enabled joystick for 2 player game. You can take a look to it if you are going to continue your project.

[Chips-fr]

Strange. It's now very good on raspberry pi 3, so there should be some dependencies between platform. What is your platform ? Are you sure you're full speed ? Which platform did you choose when compiling ?
The only other ARM platform i could try is an orange pi...

Yes i already take a look at your version and took 2nd joystick and 2nd mouse button solution. I did look at disk switching which was interesting (especially since the gui source is far from usable).
https://github.com/Chips-fr/uae4arm-libretro

[apison]

I use it on a hacked jamma pandora box, it use jessie linux as os, maybe the problem is my board, retroarch said that games run 60 fps, so speed should not be the problem.

[apison]

With the fix The sound is great setting uae4arm in ntsc 60hz mode, in PAL crackling is still present.

[Chips-fr]

note that this core emulate a PAL amiga, which has refresh screen of 50Hz and not 60Hz. It is hardcoded in /libretro/core/libretro-core.cpp: struct retro_system_timing timing = { 50.0, 44100.0 };
If i understand well you're still emulating a PAL amiga but with a refresh rate of 60Hz on your device ?

On my Rpi3:

• If i keep PAL amiga and set Rpi screen refresh to 50 Hz, sound is good and display is fluid.
• If i keep PAL amiga and set Rpi screen refresh to 60 Hz, sound is good but display is a little jerky.

This is quite expected.

So i don't have same problem as you.
Could it be link to retroarch version ? I use latest version on my side (1.8.6)

[apison]

My fault I didnt setted audiosync option in retroarch now audio is perfect. Thank you very much for your fix.