Re: General 6809 card for 6502 machines

From: didier derny <didier_at_aida.org>
Date: Thu, 19 Oct 2017 09:26:40 +0200
Message-ID: <46ab525f-1ffc-b434-897f-b39cc419cd8a@aida.org>
in fact by the way it is build  liber809 is also bound to the frequency 
used on the atari  1.75Mz   (use of  DS1100L-175)

so even with pin 34..36 corrected it can't work with a clock a 1 or 2 Mhz


Le 18/10/2017 à 21:09, didier derny a écrit :
> there is no hope to use liber809 on a standard cpu socket...
>
> r/w is pin 34 on standard 6502   and pin 36 on sally
>
> pin 35 nc on standard 6502  and halt on pin 35 sally
>
>
> it might be possible to use liber809 on a standard 6502
>
> with a little adapter to put r/w  pin 34  --> pin 36
>
> and pin 35 with a pullup to make sure halt is not activated on pin 35
>
>
>
>
>
> On 18/10/2017 19:30, Jim Brain wrote:
>> On 10/18/2017 9:43 AM, Mia Magnusson wrote:
>>>
>>>> That card is indeed the Liber809 as noticed by others. I asked the
>>>> designer for info but no schematics or what ever and he charged $70
>>>> for the whole for the card.
>> Boise is the designer, and he does not sell HW, though it looks like 
>> he asked Cloud-9 to sell the design, and that's probably what was 
>> $70.00 (steep, I agree).  I know Boise, and can probably get a hold 
>> of the schematic, or get one from him on loan to see what it does. 
>> Boise is not a HW designer (not dissing him, just stating a fact), so 
>> I would not expect the design to be too involved.
>>
>> Let me know.  I have been dabbling in 6809 as of late, and would love 
>> an opportunity to combine my ideas.
>>
>> Jim
>>
>>
>>       Message was sent through the cbm-hackers mailing list
>
>
>       Message was sent through the cbm-hackers mailing list


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Received on 2017-10-19 08:00:02

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