Re: How is the IIgs beep generated?

[Toinet <antoine.vignau@laposte.net>]

On 27 nov, 17:40, "Jayson Smith"
<ihatespamratguynospample...@insightbb.spamsucks.com> wrote:
> I'm interested in this too. Where is the code for generating the GS beep
> located? You're saying the "Bonk" heard at bootup is generated just by using
> $C030?
> Jayson
>
> "D Finnigan" <dog_...@macgui.com> wrote in message
>
> dog_cow-1258668824@macgui.com">news:dog_cow-1258668824@macgui.com...
>
>
>
> > Some discussion on the Wikipedia page got me wondering: how is the Apple
> > IIgs beep generated? Some say it is an algorithmically drawn waveform, fed
> > to the DOC, while others suppose that it is generated by the Ensoniq.
>
> > Anyone have the full details?

There are several boing boing calls in the IIgs:
BELL at $FF3A
BELL1 at $FBDD
BELL1.2 at $FBE2
BELL2 at $FBE4

And the one used is BELL. It is called during boot, switching to the
monitor, etc.

antoine