Re: General 6809 card for 6502 machines

nice board, I'll have a look


On 18/10/2017 17:18, Nils Eilers wrote:
>> How about adding 244/245s as external tristates? That way we could get
>> rid of the "power off" thing but still reuse the existing 6502. But it
>> would cost board space, maybe it wouldn't fit in the 10x10 format?
> Indeed, they require lots of board space. The original design might seem
> kind of brutal but it has been working for decades so I don't see a
> strong requirement to change it now.
>   
>
>>   
>>> If some of you guys would be interested in having a look at my design,
>>> I'd upload the design to my website. As I said, it's almost done, but
>>> maybe good reasons will arise for late time changes.
>> Can't promise anything but if you put it on your site we might have
>> some feedback to give :)
>>
> Okay, so here we have a rendered picture of how the board should look like:
> http://petsd.net/tmp/superpet.jpg
>
> The schematics:
> http://petsd.net/tmp/superpet.pdf
>
> And the current state of the component side of the PCB layout:
> http://petsd.net/tmp/superpet-F.Cu.pdf
>
> Please note that this is a preview only and the files may vanish at any
> time.
>
> My PCB manufacturer produces the boards in quantities of tens but 10
> boards is way more than I need so I'd be willing to sell the surplus boards.
> Any feedback is highly appreciated. If you find a bug, you'll get your
> board for free.
>
> Nils
>
>
>
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