From: MikeS@fred.com   
      
   On 05/09/2022 20:02, MikeS wrote:   
   > On 05/09/2022 18:01, Terry Pinnell wrote:   
   >> I have a program that sets alarms, and as well as displaying a message   
   >> at the set date/time it is capable of playing a sound track (.WAV   
   >> file).   
   >>   
   >> But that sound only plays if my speakers are switched on.   
   >>   
   >> Is there a command prompt or batch file that will 'beep' the internal   
   >> 'sounder'? There always was one that got activated to tell you of a   
   >> serious fault when failing to boot-up, so I'm hoping that still exists   
   >> in modern PCs?   
   >>   
   > It still exists at least on most desktop motherboards but you need very   
   > low level programming to access it. Long ago Microsoft or somebody wrote   
   > a beeper driver (probably using interupts) for that purpose but it   
   > needed "real" MSDOS to obtain direct access to the hardware. I doubt you   
   > can do that with a command prompt or MSDOS emulator running under modern   
   > Windows because you are too isolated from the hardware.   
      
   This may be the driver I remembered:   
   https://www.driverguide.com/driver/detail.php?driverid=34380   
      
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