@r-type: I have deleted my previous atari800.cfg, and still no sound. All other cores sound well, so this is a problem with this particular core: this one doesn’t even make background noise, it’s totally silent. I am always using latest RetroArch from the repository.
EDIT: I was building an ARM version for Raspberry Pi. Building an X86 version, audio seems to work (in MONO). So it’s something on the Raspberry Pi that makes this core silent. Strange…
ok ,
Arm android work also.i ll try on ubuntu on nvidia shield. BTW sound is weird on this core , i ll look at when possible .
@r-type: also, when one saves the settings from Atari800 internal GUI, wrong color settings are saved, so next time emulator is launched we get all-white image. One has to delete the color settings manually from atari800.cfg to be able to see something again.
can you be more precise, which color setting ? i m not familiar with atari800 emulator i try only with color preset and they save fine. did you mean external palette ?
edit: i try external act and they work fine too after save exit and reload. i use save at exit and can’t reproduce the all white image .
@r-type: this is what you can do to reproduce the problem.
Now, you can see these values have been added to .atari800.cfg COLOURS_NTSC_SATURATION=1.21004e-298 COLOURS_NTSC_CONTRAST=1.21004e-298 COLOURS_NTSC_BRIGHTNESS=1.21004e-298 COLOURS_NTSC_GAMMA=1.21004e-298 COLOURS_NTSC_HUE=1.21004e-298 COLOURS_NTSC_GTIA_DELAY=1.21004e-298 COLOURS_NTSC_EXTERNAL_PALETTE= COLOURS_NTSC_EXTERNAL_PALETTE_LOADED=0 COLOURS_NTSC_ADJUST_EXTERNAL_PALETTE=0 COLOURS_PAL_SATURATION=1.21004e-298 COLOURS_PAL_CONTRAST=1.21004e-298 COLOURS_PAL_BRIGHTNESS=1.21004e-298 COLOURS_PAL_GAMMA=1.21004e-298 COLOURS_PAL_HUE=1.21004e-298 COLOURS_PAL_GTIA_DELAY=1.21004e-298 COLOURS_PAL_EXTERNAL_PALETTE= COLOURS_PAL_EXTERNAL_PALETTE_LOADED=0 COLOURS_PAL_ADJUST_EXTERNAL_PALETTE=0
These values ARE the problem. Remove them totally (delete those lines), re-enter RA with the core, and image will be ok again.
[QUOTE=vanfanel;34396]@r-type: this is what you can do to reproduce the problem.
Now, you can see these values have been added to .atari800.cfg COLOURS_NTSC_SATURATION=1.21004e-298 COLOURS_NTSC_CONTRAST=1.21004e-298 COLOURS_NTSC_BRIGHTNESS=1.21004e-298 COLOURS_NTSC_GAMMA=1.21004e-298 COLOURS_NTSC_HUE=1.21004e-298 COLOURS_NTSC_GTIA_DELAY=1.21004e-298 COLOURS_NTSC_EXTERNAL_PALETTE= COLOURS_NTSC_EXTERNAL_PALETTE_LOADED=0 COLOURS_NTSC_ADJUST_EXTERNAL_PALETTE=0 COLOURS_PAL_SATURATION=1.21004e-298 COLOURS_PAL_CONTRAST=1.21004e-298 COLOURS_PAL_BRIGHTNESS=1.21004e-298 COLOURS_PAL_GAMMA=1.21004e-298 COLOURS_PAL_HUE=1.21004e-298 COLOURS_PAL_GTIA_DELAY=1.21004e-298 COLOURS_PAL_EXTERNAL_PALETTE= COLOURS_PAL_EXTERNAL_PALETTE_LOADED=0 COLOURS_PAL_ADJUST_EXTERNAL_PALETTE=0
These values ARE the problem. Remove them totally (delete those lines), re-enter RA with the core, and image will be ok again.[/QUOTE]
i have hotkey enable so F1 lead me directly to atari menu ! btw, i have change many setting (color ,palette, machine ect …) or just save configuration file like you explain , and i don’t have to behaviour. it’s definitively a bug on rpi or at least not affecting linux x64 . surely related to float value.
COLOURS_NTSC_SATURATION=0
COLOURS_NTSC_CONTRAST=0
COLOURS_NTSC_BRIGHTNESS=0
COLOURS_NTSC_GAMMA=0.3
COLOURS_NTSC_HUE=0
COLOURS_NTSC_GTIA_DELAY=26.8
COLOURS_NTSC_EXTERNAL_PALETTE=
COLOURS_NTSC_EXTERNAL_PALETTE_LOADED=0
COLOURS_NTSC_ADJUST_EXTERNAL_PALETTE=0
COLOURS_PAL_SATURATION=0
COLOURS_PAL_CONTRAST=0.08
COLOURS_PAL_BRIGHTNESS=-0.08
COLOURS_PAL_GAMMA=2.35
COLOURS_PAL_HUE=0
COLOURS_PAL_GTIA_DELAY=23.2
COLOURS_PAL_EXTERNAL_PALETTE=/vm/libretro/act/jakub.act
COLOURS_PAL_EXTERNAL_PALETTE_LOADED=1
ok just tested with a pi2 and get the same behaviour (white screen and wrong value in cfg) like you. i ll look at.
You also get no audio on the Pi2, right?
No with last commit i get sound over hdmi working fine.
@r-type: Ok, I got sound working now on the Pi. However, there’s still something very wrong with the sound. This doesn’t sound like standalone Atari800 emulator: it has far worse sound. Have you also noticed that? Compare Dropzone audio effects, for example.
yes i know, it’s sound horrible, I tried on my own many sound implementation (sync/callback/pokeysnd … ) but they all sound as bad as the current one , it’s a bit frustrating.
i don’t know why ,but i don’t give up 
Ok finally got sample working in Joyride
was missing in config.h #define SYNCHRONIZED_SOUND 1 and setup->buffer_frames = 1024; then Sound_Callback(SBUF, 1024);
but not optimal yet
i ll push update on git soon.
Whoa! Great!! So the optimal solution is on latest github push? Or should we wait to try?
the last push on git should sound better and it now play sample , at least on my linux et my rpi2.
Could you test on your side to confirm as i only tested rpi2 with joyride . sample play but i have no idea how it should sound as official atari800 segfault on my ubuntu ;( i just watch some video and it seem ok for me , but not sure.
it not optimal yet because i force 8bit unsigned mono for pokeysnd and then upscaling to 16bit signed and copy channel 1 to channel 2 on Libretro side to have 16bit stereo . So not the best way of dealing sound ! ill look later if none make a PR.
For the pb with config file on rpi , i have no idea . so if anyone have idea …
@r-type: it still sounds more or less the same bad to me with the latest git push 
You can build Atari800 standalone for the Pi, it has support for it (it lacks the video/audio synchronization of a libretro port, but it will do for comparisions on how you core should be sounding). Look at the --target==rpi configure option. It doesn’t segfault on a Pi.
[QUOTE=vanfanel;34520]@r-type: it still sounds more or less the same bad to me with the latest git push
You can build Atari800 standalone for the Pi, it has support for it (it lacks the video/audio synchronization of a libretro port, but it will do for comparisions on how you core should be sounding). Look at the --target==rpi configure option. It doesn’t segfault on a Pi.[/QUOTE]
ok this is what i get with the last push ( rec of the control demo http://www.pouet.net/prod.php?which=56481 )
http://dl.free.fr/getfile.pl?file=/upelPXXy
can you give me a reference file pointing the same demo recording with standalone ?
@r-type: Here is how that demo sounds on standalone Atari800 emulator;
It sounds the same on Libretro/RetroArch on my X86_64 desktop computer. I only have WRONG audio on the Pi. Do you see the same? I mean: bad audio only on the Pi.
Yes wrong for me too with rpi , sound only in 1 channel . desperate with this core on rpi !
@r-type: maybe it’s the same problem causing the wrong numbers generated in the COLOR_* values of the atari800.cfg file? I mean, some kind of precission problem that’s only happening on the Pi for some reason.
[QUOTE=vanfanel;34604]@r-type: maybe it’s the same problem causing the wrong numbers generated in the COLOR_* values of the atari800.cfg file? I mean, some kind of precission problem that’s only happening on the Pi for some reason.[/QUOTE]
Ok so for the bad value in cfg , was my fault i was using an old and bad libco arm with a not-8byte aligned stack. now with the last push from git , you should not have the wrongs numbers in .atari800.cfg
now for the sound i have to dig …