[Coco] CoCo3 RGB port question...

[Allen Huffman]

I do recall a PEEK you could use to see if a CM-8 was plugged up. We should ask someone like Steve Bjork is he knows the details of why it wasn’t used.

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> On Dec 30, 2017, at 6:18 PM, Zippster <zippster278 at gmail.com> wrote:
> 
> Hello everyone,
> 
> On the CoCo3’s RGB port, pin 10 is held high by a pull up and goes to PB3 (PIN 13) of PIA 1 (Audio).
> 
> I vaguely remember a thread long ago discussing this that basically seemed to relate that this was
> intended as some sort of display ‘sense’ pin, to be used to detect the presence of an RGB monitor.
> 
> From what I remember it was also said that this feature was never used to anyone’s knowledge.
> 
> Does anyone know if this is true, or exactly what the deal is with this pin?
> 
> - Ed
> 
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