RE: memory failure / kim-1

I've finally analyzed the schematics on the kim1 tape interface and checked the code in rom.
Apparently the LM311 + LM565 are just used to convert the 2 frequencies received by 1 or 0.

I can probably do that with an avr tiny and less glue components. 
(and less cost 2€ for a ATTINY13-20PU,  LM311 0.25€  LM565 3€)


--
Didier


-----Message d'origine-----
De : owner-cbm-hackers@musoftware.de [mailto:owner-cbm-hackers@musoftware.de] De la part de didier derny
Envoyé : mardi 11 septembre 2012 14:17
À : cbm-hackers@musoftware.de
Objet : Re: memory failure / kim-1

I'm not using the original kim-1  but the new kim-1 made by Vince Briel.
on the new kim-1 the tape interface is not wired. (he is planning to build an extension later).

I was thinking to rebuild the analogic part, so I was trying to understand the schematics.  (Page 31 Kim manual) if I understand in the "great lines" I dont totally understand the purpose of each component.

Best Regards,

--
didier

On 11/09/2012 12:42, Anders Carlsson wrote:
> Didier Derny wrote:
>
>> I'm thinking to rebuild a tape interface for my new kim
>
> Excuse my ignorance, but doesn't the KIM-1 use a regular tape 
> recorder? I found a scanned/OCR:ed copy of the manual with a small 
> diagram how to connect the tape recorder to the computer board:
>
> http://www.kim-1.com/usrman.htm#25
>
> Are you looking for something technically more advanced than that, 
> maybe how to convert a C2N to be used with a KIM-1?
>
> Last year, Thomas Gutmeier in Austria designed an adapter to connect a 
> C2N to a VTech Creativision video game. I suppose it is of no 
> relevance, since the Creativision inputs digital signals similar to 
> what the C2N already outputs.
>
> http://www.8bit-homecomputermuseum.at/repair/creativision_datasette_in
> terface/Creativision_datasette_interface.html
>
>
> Best regards
>
> Anders Carlsson
>
>
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