Re: Tape Doesn't Work on PC

[mjmahon@aol.com (Michael J. Mahon)]

In article <9307085f.0303080616.13aa28fe@posting.google.com>,
steve@dosius.zzn.com (Dosius) writes:

>The problem is more, we don't know what to do with the data when we
>get it to the PC side (for example, translate into bitstream, or how
>to input it into the emulator).  Ma�ro$haft Extended, Commod(or)e and
>Terse-80 emulators :) have the support because tape storage was common
>on those systems.  On the ][ it wasn't common, but it was done.

Well, if you want to go for the ultimate in authenticity, you could
just read the sign bit of the audio input ADC for the cassette input
(with the emulator "paced" to 1MHz simulated speed, of course), and
toggle the sign bit of the audio output DAC for cassette output.

That would precisely emulate what the Apple II hardware does, and
would allow you to hook up your cassette deck to your PC sound card
and have at it!  ;-)

-michael

Check out amazing quality 8-bit Apple sound on my
Home page:  http://members.aol.com/MJMahon/