King's Quest VI: Heir Today, Gone Tomorrow's original requirements:
MS-DOS 5.0 or Windows 3.0 or greater
16 MB RAM
1 MB Hard drive space
VGA 256 colors
SoundBlaster or compatible sound card
Audio problems are common in the later Sierra DOS SCI games. There's no single fix for all these games. You can try the Windows version, if running on 32-bit Windows.
Solution 1 (preferred):
Play the game in DOSBox. It also will work with the MT-32 sound module, if you are fortunate to have one.
Use VDMSound. The game work well with VDMSound. The sound will be as good as your audio hardware, and as with DOSBox, it works with the MT-32 sound module.
Play the game with FreeSCI, a third party Interpreter for Sierra's early SCI games.
Solution 4 (DOS/Win9x):
Install DOS drivers for your soundcard. Without DOS drivers installed you won't have sound in a DOS window in Windows 9x. If you can't find DOS drivers for your soundcard, there is an alpha (developmental) version of VDMS that you can try.
Unable to initialize your audio hardware
This is actually a speed bug.
Solution 1 (preferred):
Play the game in DOSBox. Note: Back when computers came with a "Turbo" switch (a sort of speed switch,) Sierra's workaround was to turn off the Turbo switch to start the game, after which you could turn the Turbo back on. If you have your cycles in DOSBox set too high, you may still encounter this problem. You can mimic the turbo switch solution by lowering your cycles (Ctl+F11) before starting your game. You may raise the cycles back up after the game starts (Ctl+F12).
Use the updated driver,AUDBLAST.DRV (sb16drv.exe)
Try installing the Windows version
Problem - Swamp Lockup:
The game locks-up at the swamp after Stick in the mud and Rotten tomato throw the swamp ooze on Bump in the log. After installing the updated AUDBLAST.DRV (sb16drv.exe) sound driver from Sierra for the MS-DOS version.
Set voice options to no audio card. A sound is supposed to be played after the scene. If you have your install options set to an audio card which isn't supported by your machine, the game locks-up.
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