Re: NEWSFLASH! Linux ported to Commodore VIC-20!!

Rogier Wolff (R.E.Wolff@BitWizard.nl)
Mon, 14 Sep 1998 17:32:32 +0200 (MEST)


Chris Adams wrote:
> According to Anders Melchiorsen <postmaster@and.nospam.kampsax.k-net.dk>:
> >How much data would an audio tape be able to carry? Are we talking a
> >few hundred kilobytes or are we in the megabyte range?
>
> IIRC, my old Atari recorded at 150 baud. That would be about 32K on each
> side of a 60 minute tape. You can go with longer tapes, but they are more
> likely to stretch, corrupting your data.

As far as I know, the C64 did about 1200 baud (150 bytes per second).
270kbytes per C60 side.
You could get it to increase speed by a factor of 8 by using fastloader
stuff. -> 2Mb per C60 side.

If you can make a 28k8 modem in software, you can probably increase
that another factor of three -> 6Mb per side.

If the signal to noise ratio is similar to telephone, and bandwidth is
15k instead of 3k you can gain another factor of 5. -> 30Mb per side.

You can use stereo. -> 60Mb per side.

My guess is that tape maxes out around that figure.

Roger.

-- 
| Most people would die sooner than think....  |    R.E.Wolff@BitWizard.nl 
| in fact, most do.  -- Bertrand Russsell      |     phone: +31-15-2137555 
We write Linux device drivers for any device you may have! fax: ..-2138217

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