Just in case anyone is interested in Series 80 development, I have
listed a Programmable ROM Module on eBay.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1945568752
You can find ROM images on the Series 80 Web Site here:
http://www.series80.org/
And here is an interesting Byte Magazine article on the 80 series:
http://www.series80.org/ByteArticle