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Win98/Nforce2/Aureal Vortex2 installation problem (no DOS emulation)

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First post, by stamasd

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I am trying to make a Vortex2 card work in Win98SE+DOS on this Nforce2 motherboard.
The card is an AU8830A2.
The morherboard is a Shuttle MN31L https://theretroweb.com/motherboards/s/shuttle-mn31l with a Sempron 3000+ and 512MB of DDR-400
Win98SE freshly installed
I'm using drivers 4.06.2015 downloaded from https://www.vogonsdrivers.com/getfile.php?fil … 451&menustate=0 because I have the DX9.0C redist installed (so DirectX is above 7.1)
When installing the driver, I get a message "your card is not installed in the primary PCI bus, DOS emulation will not work"
and indeed, at boot it tries to load Au30dos.exe and fails with the error message "DOS emulation is disabled in Windows, aborting"
Sound works in Windows, but none of the emulated devices show up in device manager, only the Aureal PCI device. There is no sound from any game running in a DOS prompt under Windows.
I tried forcing hardware detection, which doesn't find anything.
I tried all 3 PCI slots on this motherboard, no change.

Is there anything I can do to get DOS sound with this card?

I/O, I/O,
It's off to disk I go,
With a bit and a byte
And a read and a write,
I/O, I/O

Reply 1 of 4, by Stretch

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Uninstall the audio driver. Then before reinstalling, modify the DisableBusDetection line:

  • Open au30mmed.inf
  • Find the [AspenOverides.Addreg] section
  • Remove the ; infront of HKR,Config,DisableBusDetection,1,1
  • Save the changes

Win 11 - Intel i7-1360p - 32 GB - Intel Iris Xe - Cubilux 7.1 USB

Reply 2 of 4, by stamasd

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The driver file does not have such a line in the [AspenOverides.Addreg] section

IMG-20240929-103217.jpg

Should I manually add it?

I/O, I/O,
It's off to disk I go,
With a bit and a byte
And a read and a write,
I/O, I/O

Reply 3 of 4, by stamasd

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Well I did add it, and when reinstalling with the modified driver I get the exact same message and no emulation, i.e. exactly the same as before.

I/O, I/O,
It's off to disk I go,
With a bit and a byte
And a read and a write,
I/O, I/O

Reply 4 of 4, by SScorpio

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The NForce 2 chipset is missing legacy support which is required to get DOS emulation working. NForce2 and DOS Sound question

This thread is linked in the other but it goes into the issues around all of the various board, while the other post is about the Nforce 2. PCI sound cards and Chipsets from various manufacturers...

I ran into this exact issue attempting to build an Athlon 64 machine for tail end of DOS Super VGA era and Windows 9X gaming. I ended up having to go with a VIA chipset board to get it working. I'm currently running both a Vortex 2 and SB Audigy 1.

The Vortex 2's Windows DOS support is interesting in that DOS window settings lets you choose the MIDI output being used when you utilize the Vortex 2's DOS MPU-401. That let's me easily switch between Windows' built in GM Roland MIDI support, the Vortex 2 MIDI, SB Audigy MIDI /w SoundFont, or external MIDI modules.

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