Re: KIM 1 program on magnetic tape.

From: Marko Mäkelä <>
Date: Sat, 24 Sep 2011 17:03:02 +0300
Message-ID: <20110924140302.GA2956@x60s>
On Sat, Sep 24, 2011 at 01:39:25PM +0200, Didier Derny wrote:
>Is it possible to find somewhere a program for KIM1 Originally on 
>magnetic tape but transferred on any Audio file format ?  .au  ?.wav

Almost ten years ago, I wrote a decoder and encoder for the KIM-1 tape 
format in the "c2n" utility.

>I still have an old C64 K7 tape are there any similarities between C64 
>tape and KIM tape ?

The KIM-1 tape format is an ASCII hex dump of the data. (And I thought 
that the Commodore tape format is as wasteful as it can get.)

>I've just ordered an new KIM-1 and I'm think to implement a kind Of 
>fake tape player / recorder using the flash memory of a microcontroller 
>To save the data (for example an avr with the SPM instruction).

You might save yourself some trouble by looking at my "c2n" utility and 
the C2N232 interface. The C2N232 just relays a pulse stream, while the 
c2n utility does the encoding and decoding. It should not be too hard to 
port the codec to the AVR.

>Any idea ?

If you want a WAV file, you can ask the "c2n" utility to generate one.  
You could also hook the KIM-1 to the headphone output of a PC, I guess.  
I did test the PCM audio output of my "c2n" utility by loading some 
short files to a PET or Commodore 64.


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Received on 2011-09-24 15:00:11

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