[Coco] Can anyone explain this?

[Bruce W. Calkins]

I presumed he was referring to the 16k/4/k button placed on early CoCos. 
Based on the machines I have seen with them and those without, I 
unofficially conclude they were discontinued some time about the beginning 
or early in the production of the E board.



Bruce W.







> Uh, what's "the bubble"?  I guess I should know this, but I'm drawing a 
> blank,
> perhaps because my first CoCo was an E board, and so presumably lacked 
> one.
>
> Art
>
> On Fri, 29 Feb 2008, Bruce W. Calkins wrote:
>
>> > The coco 1 without the bubble can't be that rare, Even in mint 
>> > condition.
>>
>> The "bubble" was discontinued sometime about or during the the E board 
>> run.
>> I've yet to see an E board with or a D board without.
>>