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Path: ...!weretis.net!feeder9.news.weretis.net!i2pn.org!i2pn2.org!.POSTED!not-for-mail From: mitchalsup@aol.com (MitchAlsup1) Newsgroups: comp.arch Subject: Re: Making Lemonade (Floating-point format changes) Date: Tue, 14 May 2024 17:48:49 +0000 Organization: Rocksolid Light Message-ID: <4685fb29f4b4fb73d7624ad9515edc3a@www.novabbs.org> References: <abe04jhkngt2uun1e7ict8vmf1fq8p7rnm@4ax.com> <memo.20240512203459.16164W@jgd.cix.co.uk> <v1rab7$2vt3u$1@dont-email.me> <20240513151647.0000403f@yahoo.com> <v1tre1$3leqn$1@dont-email.me> <9c79fb24a0cf92c5fac633a409712691@www.novabbs.org> <2024May14.073553@mips.complang.tuwien.ac.at> <ddfe16ae5b6b2fd1339602826246b849@www.novabbs.org> <BUL0O.89974$TyYf.35075@fx15.iad> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Info: i2pn2.org; logging-data="1095869"; mail-complaints-to="usenet@i2pn2.org"; posting-account="65wTazMNTleAJDh/pRqmKE7ADni/0wesT78+pyiDW8A"; User-Agent: Rocksolid Light X-Spam-Checker-Version: SpamAssassin 4.0.0 X-Rslight-Site: $2y$10$lm//oFDXWdVvbratGJn15OdsnhnYtDObJ2s3nDRWKtayCajTzJgJ2 X-Rslight-Posting-User: ac58ceb75ea22753186dae54d967fed894c3dce8 Bytes: 2090 Lines: 22 Scott Lurndal wrote: > mitchalsup@aol.com (MitchAlsup1) writes: >>Anton Ertl wrote: >> >>> mitchalsup@aol.com (MitchAlsup1) writes: >>>>I recall that MIPS could emulate a TLB table walk in something like >>>>19 cycles. That is:: a few cycles to get there, a hash table access, >>>>a check, a TLB install, and a few cycles to get back. >> >>> Which MIPS? R2000? R10000? Something else? Was this an inverted page >>> table? >> >>R3000 and it was a hast table ~1MB in size. > Would would have been a significant fraction (25%?)of the > total memory available on a R3k based system in 1990. I heard numbers in the 10% range, so we are within a factor of 2 in our memory. The smaller main memory was, the less can be co-resident and the smaller the effective table size. {{But my MIPS info is mostly 3rd hand}}