Re: How is the IIgs beep generated?

[Mitchell Spector <mitch2gs@hotmail.com>]

Toinet <antoine.vignau@laposte.net> wrote:

>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.

    Here's a question, one I've been curious about the past twenty years:
Can you reproduce the IIgs "beep" on a stock Apple IIe?

Mitchell Spector