Upgrades for ALL CoCo Models
Recently I was faced with having a few CoCo 1’s with 16k, or faulty 32k/64k upgrades. Asking questions on social media doesn’t always result in the assistance you’d like; though in this instance I was pointwed in the right direction. There’s two specific articles in the Rainbow that may be of useif you’re caught in the same leaky boat.
RAM/ROM Upgrade Roundup by Ed Ellers in the May 1984 issue
or
Upgrading the CoCo’s Memory by Marty Goodman in the March 1989 issue
The Eller’s article obviouslt covers the CoCo 1 & 2 model. The Goodman article references Eller’s article, but discusses the CoCo 3.
Extracted pages are below.