[Coco] RAM SIZE INPUT mystery (solved)

[J.P. Samson]

On Sep 27, 2008, at 5:20 PM, Chuck Youse wrote:
> On Sun, 2008-09-28 at 08:10 +1000, Nickolas Marentes wrote:
>> Thanks Chuck. That explanation as to what the RAM SIZE INPUT & OUTPUT
>> pins are on the CoCo3 makes sense.
>>
>> Holding down the F2 key simulates setting the RAM SIZE jumpers of the
>> CoCo1/2 for 4K for old software that actually looks at this. I'm not
>> aware of which programs needed this but for the sake of  
>> compatibility it
>> has been included it would seem.
>
> Oooooh.. I stand corrected then about the significance of its  
> connection
> to the keyboard.  Looks like RAMSZ is connected to the keyboard column
> that has F2 on it!  Resulting in the behavior you described.

Perhaps this is an ignorant question of me to ask, but...

Why would a CoCo 3 need to respond as if it were a 4kB machine?   
Surely a computer with more memory would be just as good for any  
program?

-- JP