Opened 5 years ago
Last modified 5 years ago
#18855 new enhancement
please add much better sound support for DOS VMs
| Reported by: | Steve Sybesma | Owned by: | |
|---|---|---|---|
| Component: | audio | Version: | VirtualBox 6.0.10 |
| Keywords: | BIOS AUDIO EXTENSION PACK DOS SOUND | Cc: | steve@… |
| Guest type: | other | Host type: | Windows |
Description
The current implementation you have is apparently DMA-based only and is based on an unknown model number of SoundBlaster 16, which I think is the only choice that has a chance of working in DOS (I don't know about ICH AC97).
Most use in DOS hinges on making use of an I/O address such as A220. That is what I'm hoping you can implement along with the address for MIDI support (i.e. P330). I do not know how you implement the interrupt and high/low DMA but seems like the I/O address has been the biggest issue stopping sound from working.
Also, how exactly is your sound virtualization implemented? Is there a module that can be added to VirtualBox to accomplish this (something like an Extension Pack for DOS), or is there a module that can be added as a 'pre-boot' BIOS extension inside the DOS guest (similar to how OnTrack DDO used to work)?
Related discussion in the forums: https://forums.virtualbox.org/viewtopic.php?f=4&t=94367