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Read your article, "Whatever happened to 64-bit computing?", with interest. Some comments: 1. IBM's AS/400 has had fully 64-bit systems for 5-6 years now. And something like the 'revolutionary' programming techniques, like >The trick to making 64-bits desirable is to design new types of >applications that make use of them. Consider that obscenely large address >space I described earlier: What if we were to design memory-mapped file >systems? Imagine that you didn't have to open and close files, but that >you manipulated them through data structures directly, and that it was the >operating system's job to page the data into and out of memory as-needed. >64-bit addresses are still large enough to handle any file system. It >makes a lot of programming a lot easier. has been used on this 'dinosaur' machine since its inception 20 years ago. It's called single-level-store, i.e., all memory and disk are one address space. No need to program segments, they don't exist at the abstract layer exposed to developers. 2. >people are going to be most concerned initially with running their >existing code on them, and on porting it to the new architectures Code written on the System/38 20 years ago will run, without change (on the part of developers - there's an automatic conversion at the lowest level), on any AS/400 (iSeries) today. No porting needed. Nada. Zilch. Thanks Vern Hamberg Would you like to see a challenging little arithmetic puzzle that might get you or your kids or grandkids more interested in math? Go to <http://cgi.wff-n-proof.com/MSQ-Ind/I-1E.htm> Sillygism-- Something is better than nothing. Nothing is better than a ham sandwich. Ergo Something is better than a ham sandwich.
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