![]() ![]() Heard when the Sound Blaster compatible game is played.Īnd when I try to use the VxD driver in Windows, it gives me the BSOD.įrom a technical perspective, I remember VIA 686B southbridge supports special logics for trapping legacy SoundBlaster compatible I/O, so the driver actually uses that to emulate SBPro compatibility in DOS with AC97 audio. You should change the MUSIC setting in your Sound Blaster compatibleĭOS game from FM MIDI to GENERAL MIDI. The Sound Blaster emulation isĭone by Microsoft and OP元 music format is not supported under the Music format ONLY in the Windows DOS box. You can play Sound Blaster compatible DOS games with GENERAL MIDI ** Sound Blaster Compatible DOS Game Supported ** Am I missing something?Įven one of the steps in the readme file says this. Now I'm happy that I can now play my MS-DOS games.Įdit: Windows 98SE doesn't like to play nice (no FM Synthesizer whatsoever), but I do get sfx in games, like DooM, no music. The file name is 68mu220b.zip, so you can also find it elsewhere on the intertubes.Ĭopy code to clipboard 1 C:\viaudio\ VIAUDIO.COM is found under "Legacy Audio driver with DOS file" at the following URL: You could uninstall this program by delete the line from the AUTOEXEC.BAT. ** VIA Sound Blaster Pro Compatible Uninstallation ** Into the AUTOEXEC.BAT and copy the original AUTOEXEC.BAT toĭ) Reboot the system when the installation is completed. Then the program will insert the following new line You could enable the Sound Blaster Pro compatible funciton by usingĪ) You should enable the Sound Blaster first on the BIOS setting ofĬ) The program will copy the relative files into the directory which ** VIA Sound Blaster Pro Compatible Installation ** If you want to play the legacy games on the Windows DOS Box then you Music will not be heard but the sound still could be heard. ![]() Run this setup program to enable the OP元 MIDI music. Real mode MS-DOS or the "Restart in MS-DOS" from Win9x. If you want to play those Sound Blaster compatible DOS games under the PCI audio device in order to have Sound Blaster compatible DOS games The Sound Blaster Pro Compatible sound chip is integrated into the VIA INTEGRATED PERIPHERALS -> Onboard Legacy Audio (Enabled) The selecting to enable the setting on the BIOS : Want to play the Sound Blaster compatible DOS games. Please "Enabled" the Sound Blaster setting on the BIOS first before you ![]() ** VIA Sound Blaster Pro Compatible Setup Program ** I suspect that as DOS support has faded away, so did these additional HW layers on most AC97 audio devices.A) VIA Sound Blaster Pro Compatible Setup Program These devices may be AC97 under the hood, but the SB support is still in HW. ![]() In other words, the act of catching access to port 22xh is done in hardware, not by a driver/emulation layer. If Sound Blaster decode is enabled via this bit, and the legacy subsystem is enabled via bit(15) = “0”, then the DMA channel specified by bits(7:6) is activated for playback sample transport, and the IRQ# specified by bits(9:8) is activated for SB interrupt service requests. Where there is a bit in the PCI device to enable/disable legacy audio support:Ī “1” in this bit position enables positive decode for all Sound Blaster register I/O references. I found a rather old pdf file from intel about how they recommend vendors support legacy audio in PCI: I think those drivers still require HW support for soundblaster emulation. ![]()
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