Re: PET/CBM Tape Archiving

From: Mike Naberezny <>
Date: Fri, 05 Oct 2012 13:31:14 -0700
Message-ID: <>
Hi Marko,

On 10/5/12 1:00 PM, Marko Mäkelä wrote:
> I tried an audio tape deck and TAPir with some success about 10 years ago to
> create pulse stream files (*.tap images).

I'll try TAPir with these WAV files that I have already made.

All of the tapes are for PET/CBM.  I noticed both TAPir and mtap have options 
to select a computer type but no PET/CBM option on either.  Does this matter?

> Note that the *.prg format can lose some data. On the cassette, you have a
> 192-byte tape header followed by the actual program payload. Usually the
> 192-byte header contains a 16-byte file name and start/end addresses only.
> Sequential tape files are divided to 192-byte blocks. There are two copies of
> each block on the tape. The 'high-level' tape image format (as opposed to a
> pulse stream, or *.tap file) is sometimes called *.cas or *.csm. My cbmconvert
> utility can handle it.

Thanks for this info.  I'll save .tap instead of .prg so we don't lose data.

> You could connect the C2N to the parallel port of a PC and use mtap to create
> *.tap images, which you can convert with my "c2n" utility to high-level tape
> images and then with cbmconvert to *.prg.

I found the schematic here:

I'll build the cable and try it.


Mike Naberezny (

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Received on 2012-10-05 21:00:37

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