[Coco] Transplanting 512K RAM expansion?

Stephen Castello zootzoot at cfl.rr.com
Wed May 24 17:32:42 EDT 2006

On Wed, 24 May 2006 17:12:40 +0200, Fedor Steeman
<petrander at gmail.com> had a flock of green cheek conures squawk out:

>I want to transplant a 512K RAM expansion from one CoCo3 to another, but not
>being a hardware buff, I am a bit uncertain on how to proceed.
>The 512K RAM expansion seems to sit on top over the location of the original
>128K RAM-blocks, so it seems an easy job of taking it out and putting it in
>the other CoCo over the 128K RAM-blocks. Is it really that simple? Or are
>there other measures I need to take?

From the service manual: You need to remove the four memory chips,
IC16 - IC19 and unsolder C65 82pf ceramic capacitor.  Then install the
512k board.

If you want to keep the old one running, put in C65 and the four
memory chips.


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