[Coco] raspberry pi 3 model b to coco serial cable

[David Ladd]

On Sat, Nov 4, 2017 at 5:34 PM, Mathieu Bouchard <matju at artengine.ca> wrote:

> Le 2017-11-04 à 16:47:00, David Ladd a écrit :
>
> RS232 has ranges of -25V to +25V depending on the status of the bit.  Those
>> kind of voltages would damage the Raspberry Pi's GPIO if you directly
>> connected them to the CoCo's bitbanger without the level shifter.
>>
>
> In practice, which devices ever really used the full ±25V range instead of
> just ±12V ?
>

​I was just stating based on specification documentation.​



>
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