I also have an Atari VCS 800, which is running off the 1606G processor. This fella does not have audio. It only does audio through HDMI, which I don’t know is working at all on Haiku, but it also doesn’t show anything in the Media preferences, so I’m assuming it’s not picking up the hardware. This is the listdev for the VCS:
I have “SBx00 Azalia (Intel HDA)” sound on board - Haiku seems to recognise it and even knows that I have a “front headphone jack” - but no sounds comes out. (Reading this thread, at a stretch I guess I should try the HDMI audio; If it works I can buy a box that pulls that out of the signal, or get a monitor with audio).
I have also tried a Platronics USB DAC (used for telephony etc) - it doesn’t recognise at all. I had earlier tried OpenSound, but it refuses to install at the moment (crashing out)… I had thought that miiiiight work with the plantronics…
NB - I managed to reinstall Open Sound. Didn’t help with either the built in audio nor the Plantronics USB DSP stick… Back to square one… NB - the other (main?) audio device I missed was the “RS880 HDMI Audio [Radeon HD 4200 Series]”… Neither HDMI nor Front audio jack (nor audio jack on USB dongle) did anything (other than produce a few clicks on boot, and for the USB dongle, a low background hiss when powered),