Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uunet!munnari.oz.au!mullian!raob From: raob@mullian.ee.mu.oz.au (Richard Oxbrow) Newsgroups: comp.arch Subject: Re: bus on new IBMs Message-ID: <3239@munnari.oz.au> Date: 25 Feb 90 03:12:58 GMT References: <3236@munnari.oz.au> Sender: news@cs.mu.oz.au Reply-To: raob@mullian.ee.mu.OZ.AU (Richard Oxbrow) Organization: Dept. of Electrical Engineering, University of Melbourne Lines: 28 >>that doubled its performance from 20Mb/s to 40Mb/s. There is a >>For comparison, the SS1's Sbus is 100Mb/s, I think. >For the case of the SBus on a 16 2/3 Mhz bus, a'la SS1 > > 29 Mb/s @16 2/3Mhz "burst" thru' put (DMA) > 25 Mb/s @16 2/3Mhz "burst" thru' put (DVMA) The SS1 is actually ^^^^^^^^20 MHz , my mistake .. (thanks dc@sun.com) the rest of the numbers are correct (see. page 25, SBus Specification Rev.A) richard .. #PS. And Mb/s = mega BYTES per second (next time I will use MB/s) Richard Oxbrow |ACSnet raob@mullian.oz dept. of ee eng ,uni of melbourne |Internet raob@mullian.ee.mu.OZ.AU parkville 3052 australia |Arpa-relay raob%mullian.oz@uunet.uu.net fax +[061][03]344 6678 |Uunet uunet!munnari!mullian!raob