[Coco] RAM upgrade - CoCo 2 - 26-3134B

[Bruce W. Calkins]

A: There are jumpers or solder pads to set with either upgrade.
B: A third option existed, a plug in board using the two white sockets. 
(Hard to find, I have/had 2 and few other people have seen any.)
The easiest is to swap in 2 of the 4 chips from a upgraded CoCo 3 and 
set the jumpers/solder pads.
Bruce W.



On 02/04/2018 08:54 AM, Tri-City-Maniac wrote:
> Hi,
> 
> am i right, that there are two possibilities to upgrade this versions to 
> 64K?
> 
> It has only two sockets.
> 
> 1. Replacing the two 4416 RAMs with two 4464 ones.
> 
> 2. The board has 8 postions to solder some sockets there. After that i 
> could use eight 4164 RAMs.
> 
> I don't know, if the first method is "plug and play".
> 
> Thanks.
> 
> Tom
>