I noticed the SBPro Environment Setup Program could not detect the DMA
out of 3 choices (0,1,3).
Perhaps Virtualbox is emulating a different DMA number than those three?
The same Environment Setup Program had no problem with assigning the I/O
of A220.
On the other hand the SBPro Test Program could not test A220.
That is an interesting problem that you mentioned about Virtualbox.
So would the answer be that Oracle (or a volunteer) would have to add
I/O port emulation to whatever BIOS Virtualbox is using?
Another thought came to me if that cannot be done for whatever reason:
OnTrack way back in the 1990s used a 'pre-boot' BIOS extension that
loaded before anything else in CONFIG.SYS to implement Dynamic Drive
Overlay in order to recognize larger HDDs than the native BIOS would
recognize. I remember using that.
This seems like a possibility for when DOS is used as a guest OS to
extend Virtualbox audio capability. Matter fact that technique might be
a fix for any DOS hardware shortcomings in Virtualbox.
Steve Sybesma
On 2019-08-18 16:22, Mercury Thirteen via Freedos-user wrote:
> Even with a driver installed, VirtualBox only emulates DMA-based sound and
> not the I/O port based sound used in some games/programs.
>
> Sent with ProtonMail [1] Secure Email.
>
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Sunday, August 18, 2019 6:09 PM, <st...@vwebr.net> wrote:
>
>> Hello,
>>
>> Virtualbox supports SoundBlaster 16 BUT there is no sound on the game
>> PakuPaku when played.
>>
>> I didn't really expect sound because even though Virtualbox merely mimics
>> the SB16 hardware, no drivers are installed.
>>
>> The BLASTER environment variables are there in the FDAUTO.BAT file, but I
>> notice no drivers load in FDCONFIG.SYS so I'm guessing that's because of
>> licensing.
>>
>> There's a lot of 'junk' secondhand or worse SB16 driver installers out there
>> you can find on various websites, but I'm super picky about where I get my
>> files from.
>>
>> If I grab SoundBlaster 16 DOS drivers from here (I like getting stuff from
>> the official source as much as possible)...
>>
>> https://web.archive.org/web/19980213040248/http://www1.creaf.com:80/wwwnew/tech/ftp/ftpinx.html
>>
>>
>> ...and here...
>>
>> https://support.creative.com/Products/ProductDetails.aspx?catID=1&subCatID=207&prodID=1842&prodName=Sound%20Blaster%2016&subCatName=Others&CatName=
>>
>>
>> ...and install them, can they be expected to produce sound?
>>
>> Thanks,
>>
>> Steve Sybesma
>
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