Re: Disk Image to cassette tape

[TWS <adoyson@nccn.net>]

Hi,

How about this.  Use a Disk to DiskImage converter to convert your disk on the
Apple II.   Connect your Apple II Cass OUT to your PC's SOUNDBLASTER (or Macintosh
Sound)  INPUT.  Use the ROM in the Apple (there is a TAPESAVE command) to save the
143k disk image over the CASSETTE port.  Press RECORD on the Mac/IBM sound
recording program.

Write a program for you IBM (or Mac?) that will decode the Audio into a binary
file.  The program would involve some Timing loops to synchronize with the sound
file.  Shouldn't be hard at all.

Problems you could have:  #1  a 143k sound file sent from the Apple II cassette
port may be 4 hours long.  I don't know how long it will be.  Do you really want a
4Hour long sound file on your Mac/Pc Hard drive?

Hmm how about writing a program for your IBM/Mac that will Get sound from the
AUDIO INPUT, and De-code it into data as it receives the sound?

Sean Burnett wrote:

> Hi,
> Thank you for the responses, everybody.  This is the best newsgroup I've
> had the opportunity to follow.  No major attitudes or anything, and
> everybody seems very helpful.  Enough of the touchy feely stuff - now
> down to business.
>
> My goal in asking the 'cassette out' question is that I hope to be able
> to do this:
>         1) write a disk image to tape (actually, minidisc track)
>         2) transfer this to a more modern computer into a .wav file
>         3) write a program to extract the Apple ][e disk image out of the .wav
> file.
>
> My first project will be to do a single Apple file and use DSK_OUT to
> convert it to a disk image for use in an emulator.
>
> There seems to be mechanisms for getting Apple ][e disk images if
> someone has a serial port or compatible game port and cable, but not
> using the cassette out peripheral.
>
> Any comments?  Would this be a worthwhile endeavour for anybody except
> me?  Any rate, it will be a good exercise.  I will post the program when
> it is complete.
>
> Sir Cain wrote:
> >
> > I had a program called COS (Cassette Operating System), I think, that came
> > on an old Micro disk.  It would break up an Disk image into four or five
> > parts and save them to cassette (or restore from cassette to disk).  It was
> > not a complete Operating System, but more like a utility program.  And of
> > course it was slow.  I'd give more specific info, but I've recently moved
> > and all my old computer books (and software) are still in boxes.
> >
> > Greg Buchner wrote in message ...
> > >In article <3622A3F5.D7702F72@swbell.net>, rubywand@swbell.net wrote:
> > >
> > >>     Is it possible to save a 140kb disk image to cassette? Yes; but,
> > >>you would need to break up the image file into smaller pieces. One idea
> > >>is to add your own routines to do something like read chunks of the disk
> > >>image file (perhaps 4096 bytes per chunk) and write the data to tape.
> > >>Then you would need a Big File tape read routine to read the chunks and
> > >>put them on disk.
> > >
> > >I at one time did have a program, was probably DOS 3.3 that did copy
> > >disks back and forth to the tape drive.  I seem to remember that it was
> > >supposed to be able to fit five disks on one side of a 90 minute tape.
> > >
> > >This was probably twelve years ago and that's all that I remember about
> > >it.  Never used it, so can't be certain about any of this.
> > >
> > >Greg B.
> > >
> > >--
> > >*****
> > >Note:  To e-mail me, replace someone with gjb
> > >I don't get junk e-mail and intend to keep it that way.