Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/17/84; site fred.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!sdcsvax!dcdwest!ittvax!decvax!genrad!panda!talcott!harvard!seismo!hao!nbires!fred!jmoore From: jmoore@fred.UUCP (Jim Moore) Newsgroups: net.micro.16k Subject: Re: Corrigenda Message-ID: <103@fred.UUCP> Date: Tue, 26-Feb-85 20:17:14 EST Article-I.D.: fred.103 Posted: Tue Feb 26 20:17:14 1985 Date-Received: Sun, 3-Mar-85 05:32:29 EST References: <983@watdcsu.UUCP> <2385@nsc.UUCP> <730@amdcad.UUCP> <2393@nsc.UUCP> Organization: NBI,Inc, Boulder CO Lines: 19 > ......... 32bit addressing makes a > nice marketing tool, granted, but there really isn't much that a 32bit > address gives you that a 24bit address doesn't also give you in a > manufactured product EXCEPT a marketing tool. > > chuq But addressing is not just for physical memory. Hardware people love extra address lines for memory-mapped IO. The software folks can avoid complex allocation algorithms by taking advantage of large virtual address spaces. Both are legitiment uses for more address lines. I am not saying that 24 bits is scimpy (sure beats 16), but there are current micro-based designs that can certainly benefit from the additional address lines above 24. Jim Moore Integrated Solutions Inc., Boulder Colorado {ucbvax|hao|amd}!nbires!jmoore