Re: ITP: ditty - Allows you to play melodies from your built-in speaker

[David Schleef <ds@schleef.org>]

On Sat, Mar 17, 2001 at 11:09:43AM +0100, Ingo Saitz wrote:
> 
> When asked for "Sound card support" by the kernel configuration,
> the help text contains the following paragraph:
> 
>   I'm told that even without a sound card, you can make your computer
>   say more than an occasional beep, by programming the PC speaker.
>   Kernel patches and supporting utilities to do that are in the pcsp
>   package, available at ftp://ftp.infradead.org/pub/pcsp/ .
> 
> Last time I tried it (linux-2.2.15), it was working relatively
> well, but you could hear every interrrupt (espccially during disk
> I/O. And, DMA access is not posible, so no sound during playing
> quake :(( [;-)]


You can do the same thing with RTAI, and the sound quality is
quite a bit better -- you don't hear interrupts at all.  It
can easily chew up a significant fraction of your CPU power,
however.  I don't think anyone has written a sound driver
front end, but it's a cool idea.





dave...