I wonder if they can be reset by just removing the bias magnets.

The bias field is needed to maintain the domains in the material.

Of course, that might make them totally useless.


From: cctalk <cctalk-boun...@classiccmp.org> on behalf of Al Kossow via cctalk 
Sent: Sunday, August 6, 2017 6:00:15 AM
To: cctalk@classiccmp.org
Subject: Re: scary warning about bubble memory loop mask, TI 763/765 maint 

the terminals pop up on eBay every so often. I picked up a couple in poor 
condition as donor machines for the one clean one I've found

On 8/5/17 10:56 PM, Eric Smith via cctalk wrote:

> With Intel devices, there is a special "seed module" and procedure that can
> be used to recover bubble devices which have become corrupted. TI just says
> that such devices have to be replaced, which is pretty difficult these days.

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