Mr carmel_andrews... No i have not used it, that's one of the reasons im selling it. The creator has told Ted Rusniak in the article above that :Cortina itself worked perfectly. (Cortina itself was merely a port expander, providing the ports necessary to connect a Jag to a keyboard, mouse, and modem for internet connection.) But I don't think the browser code was ever written. :
JagMod if i remember correctly was working on a browser in his spare time to actually utilize the Cortina, he has the only other one. Hope that helps.
"JAGUAR RULES!"