Hi, Jeff.
This set of web pages contains everything you'd ever want to know about the Heath hard-sector format:
http://www.vatmom.org/www/pages/abstract.html
Heath hard-sector format
Re: Heath hard-sector format
Jeff, does the link I gave you provide enough information to work with?
Re: Heath hard-sector format
(Bump...) Jeff, sorry to bug you, but I'm curious if any of the information I have sent on Northstar and Heath hard-sector formats is helpful in terms of implementing support.