Article View: net.micro.68k
Article #1001Re: 68000 Memory Managment
From: Reese E. Faucette
Date: Sat, 13 Sep 1986 07:28
Date: Sat, 13 Sep 1986 07:28
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>>>> I hate to tell you folks, but Andy Bechtolsheim here at Sun has a patent >>>> (applied for and granted) on using the untranslated addresses as the >>>> RAS addresses and doing the MMU address translation before the column >>>> addresses are needed for CAS. >>> >>>How the hell can the patent office grant patents like this? [...] >>>the idea is too obvious. [...] >> >>If it's so obvious, why didn't anyone think of it before Andy did? >Does anybody have proof of having or using this idea before Andy's >patent? well, when i was a sophomore at caltech in 1981, a guy taking the microprocessor lab with me built a 68000 system with exactly this memory management scheme. i am sure his project proposal is still on file with the professor of that class... -reese
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!lll-crg!nike!ucbcad!ucbvax!kim.Berkeley.EDU!reese From: reese@kim.Berkeley.EDU (Reese E. Faucette) Newsgroups: net.micro.68k,net.arch Subject: Re: 68000 Memory Managment Message-ID: <15665@ucbvax.BERKELEY.EDU> Date: Sat, 13-Sep-86 03:28:15 EDT Article-I.D.: ucbvax.15665 Posted: Sat Sep 13 03:28:15 1986 Date-Received: Sat, 13-Sep-86 07:43:26 EDT References: <508@elmgate.UUCP> <64@mit-prep.ARPA> Sender: usenet@ucbvax.BERKELEY.EDU Reply-To: reese@kim.Berkeley.EDU.UUCP (Reese E. Faucette) Organization: University of California, Berkeley Lines: 18 Summary: andy bechtolsheim come up with this before 1981 ?