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| From: Qm96c/MgTOFzemzz
Date: 2002-01-21
Subject: Re: Tap files
|
Thanks for the replies.
----- Original Message -----
From: "Grósz Attila" <gyros@freemail.hu>
To: <plus4@c64.rulez.org>
Sent: Friday, January 18, 2002 5:47 PM Subject: Re: Tap files
> > I haven't used mtap, but I have one question: does it
> have a special
> > option for plus/4 tapes? I ask this, because the plus/4
> uses considerably
>
> Not only it has a special option for the 264 family, but
> also a special
> wave mode that makes mtap to encode half sinus waves only.
> This was
> necessary, as some plus/4 turbos used asymmetric sinus
> waves ! Also
> in some cases (like with the popular HER TURBO), the sinus
> waves were
> inverted, thus the traditional MTAP format was not capable
> to encode them
> properly.
>
> I tried a lot of turbos myself, including the infamous
> Hungarian "noisy" turbo,
> which I couldn't get to work at all. It might be a bug in
> MTAP, as if I tried to
> save into MTAP format from my emulator (Yape) with this
> turbo it loaded back
> properly, but it never worked with a real MTAP-ped file...
> There are several
> other kind of turbos that failed, although I never found
> the time to
> have a look at them (and also not a real expert in it). I
> sent those MTAPs
> to the author (Markus Brenner), but he hadn't replied :(
>
> The source for MTAP is also available, so competent people
> with some time could
> have a look at it...... I guess a lot of people on this
> list did write some sort
> of turbo themselves :-)
>
> Attila
>
> > lower frequencies than other Commodores. I think that
> there's also a
> > slight difference in the pulse streams; see the source
> code of c2n (the
> > driver software for my RS-232-driven datasette emulator
> C2N232). The -2
> > option selects plus/4 timings.
> >
> > Marko
>
> --this message went through the plus4@c64.rulez.org emailing list---
>
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