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

Neil Conway (nconway.list@ukaea.org.uk)
Mon, 14 Sep 1998 17:10:50 +0000


Alan Cox wrote:
>
> > fact, it really isn't very different from the "sound card modem"
> > stuff (tape adds some funky failure modes that phone lines don't have,
> > but that can probably be ignored. Of course, all error-correction has
> > to be forward error correction, since it isn't possible to get
> > feedback from the receiver. Hmm... if nothing else, this just might
> > have enough hack value for someone to do it "just because".)
>
> At least one of the ZX spectrum emulators supports loading games from
> tape via soundblaster

Excellent ;-) IIRC, the Spectrum's input circuitry was just a
capacitatively coupled Schmitt trigger, so that's fairly easy to copy in
software. They probably just copied the rest from the ROM ;-)

That's one of the other reasons of course that they got dreadful data
rates; they used what was effectively a single-bit ADC to read from the
tape...

Neil

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