Have you checked the <A HREF="http://www.macronix.com" target="_new">Macronix</A> web site? The <A HREF="http://www.macronix.com/ProductService/EPROM_F.htm" target="_new">5 volt single power</A> series has MX29F on it. Anyway, <A HREF="http://www.macronix.com/web/P_flash.nsf/bf3add4f68988391c825667100209fa5/686cfee6dd2cc00a482569d100085778?OpenDocument" target="_new">This</A> is the closest I could find
<i>It's always the one thing you never suspected.</i>