[Coco] 64K upgrade

[billg999 at cs.uofs.edu]

>
> ----- Original Message -----
> From: "Retro Canada"
>
>> or you can use 2x 4464 on it.
>>
>> Glen VanDenBiggelaar wrote:
>>
>>> Hi all,
>>> I just got a 16K 26-3136A CoCo 2 in. I know they are probably rare as
>>> hen's teeth, but has anyone got an extra 64K "upgrade"
>>> daughterboard/kit
>>> for it?
>>> No biggie if not, just have to snag an actual 64K CoCo 2 :) But I
>>> thought
>>> I would ask.
>>>
>>> --
>
> Those daughterboards were almost as rare as hen's teeth.  I have seen two,
> I
> think they are both still in my midden heap, but things need a going
> through
> and thinning down soon as it has been years since I last saw them and
> other
> CoCo goodies.  You should be able to use 8 of the common 64k by 1 bit chip
> in that machine, Or use 2 of the 64k by 4 that came out of a CoCo 3
> upgrade.

Were they complicated or could they be easily cloned?

bill