Re: Apple II Speaker

["Bill Garber" <willy46pa@comcast.net>]

"M. Pender" <mpender@hotmail.com> wrote in message
news:Yahyb.10495$a54.2721@nwrddc03.gnilink.net...
>
> Bill, there's a trick I used to use that might help.  If you want to know
> what tones are being generated by calls to the ROM sound routine, it is
> possible to replace the routine on an Apple II+, IIe, IIc, or IIgs as long
> as it has at least 64k of memory.
>
> The idea is to save a copy of the Applesoft language to disk, modify the
> code on disk, rename the file "intbasic" and then use Loader.obj0 to load
> the code into the language card.
>
> Then when you type "INT", instead of changing over to integer basic, you
> will change over to your modified version of Applesoft.  Its also possible
> to do the same thing with memory moves, but I don't recall the sequence of
> softswitches.
>
> Anyhow, it would allow you to trap all calls to the sound generation
routine
> in ROM, as well as the parameters passed to the routine.
>
> Please let me know if this is not an adequately clear description.

Good description Mike. I've saved the info to a folder and
will give it a go as soon as I get a chance. Let ya know
how I make out, or not. Thanks much.

Bill @ GarberStreet Enterprizez };-)
Web Site - http://garberstreet.netfirms.com
Email - willy4SPAM6pa@comXcast.net
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