Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!wuarchive!udel!rochester!cornell!uw-beaver!zephyr.ens.tek.com!tektronix!reed!intelhf!ichips!ichips!glew From: glew@pdx007.intel.com (Andy Glew) Newsgroups: comp.arch Subject: Re: 64 bit addresses Message-ID: Date: 14 Feb 91 15:40:10 GMT References: <1991Feb13.212041.14368@news.arc.nasa.gov> Sender: news@omews63.intel.com (News Account) Organization: Intel Corp., Hillsboro, Oregon Lines: 22 In-Reply-To: mccalpin@perelandra.cms.udel.edu's message of 13 Feb 91 21:47:35 GMT With 64 bits of space allocated for addresses, but most programs using far fewer bits (say 40-48) there will be a lot of programs that stick something extra into that upper few bits - like a tag - and use masks or shifts to extract the address. GNU EMACS already does this - a tag in a 32 bit address. It'll be nice to be able to use GNU on really large files. --- This is my own opinion. It is not Intel's. (God, I hate disclaimers) -- Andy Glew, glew@ichips.intel.com Intel Corp., M/S JF1-19, 5200 NE Elam Young Parkway, Hillsboro, Oregon 97124-6497