[Coco] Using 1.44M disc as 720K with CoCo controller

[Frank Swygert]

Date: Tue, 12 Feb 2013 13:19:03 -0200
From: Daniel Campos<daniel.campus at gmail.com>
Subject: Re: [Coco] Issues with 26-3022 interface
To: CoCoList for Color Computer Enthusiasts<coco at maltedmedia.com>
Message-ID:<511A5D67.5050009 at gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Well, it have run without any errors. After that I loaded again each
BASIC program on the tested disk and all of them loaded and executed fine.
================================

The problem is the magnetic coating on the disc itself. If using a 1.44M disc drive it should work, but using a 720K (or 360K) drive it will appear to work, but the recording signal from the head isn't strong enough to properly record to the disc, and it won't last. Try reading a disc you wrote in a week and you will likely get errors... maybe in as little as a couple days, might take a couple months. The HD drives can sense the size of the disc and will change the signal to the head as well as spindle speed.

-- 
Frank Swygert
Editor - American Motors Cars Magazine
www.amc-mag.com