Altair32 Emulator "Easter Egg" idea

Vintage Computer Festival vcf at
Fri Mar 4 15:01:13 CST 2005

On Fri, 4 Mar 2005, Jim Battle wrote:

> One other thing I have done is to emulate the music card -- just a
> single pole RC lowpass filter hooked up to the S-100 INT* line.  The
> "MUSIC" program would take a score and compile it into a program to
> toggle the INT line to produce polyphonic music -- although the notes
> aren't very well tempered as they get higher in frequency.  It is pretty
> impressive that it works as well as it does:
> I recently upgraded PC's and now my own emulator doesn't run right and
> the sound comes out only when I'm using the debugger.  I guess it is
> about to time spin a revision on the emulator.

Very cool!  Did you record this from the emulator or from an actual
Sol-20?  It sounds as good as what the Apple ][ could produce, which I
suppose makes sense since it's generating sound using the same principal.

How do I load and play the sound files?


Sellam Ismail                                        Vintage Computer Festival
International Man of Intrigue and Danger      

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