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Article #5057Re: 7 track tape & NRZI
From: ma... Mark Delany
Date: Fri, 05 Oct 1990 10:00
Date: Fri, 05 Oct 1990 10:00
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1257 bytes
ick...@gmdzi.gmd.de (Werner Icking) writes: >By the way, the 7 track tape drives had a translator and a convertor and >sometime you had to try all the four combination of translator ON/OFF and >converter ON/OFF - what ever that was. Hmmm. Was this where NRZI first originated? Of course we *all* know that NRZI is new-fangled stuff. The precurser being RSI. Was there a pre-pre-curser? BTW. NRZI means Non-Return-to-Zero-Inverted - tape-drives didn't like runs of zero bits. -- ------------ ----------------- --------------------- Mark Delany ma...@Aus.Sun.COM ...!sun!sunchat!markd ------------ ----------------- ---------------------
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Path: mbox-mo1.pugleaf.net!gmdzi!unido!mcsun!sunic!hagbard!eru!bloom-beacon!snorkelwacker!apple!sun-barr!newstop!sunaus.oz!markd From: ma...@iti.org (Mark Delany) Newsgroups: alt.folklore.computers Subject: Re: 7 track tape & NRZI Message-ID: <markd.655120836@sunchat> Date: 5 Oct 90 10:00:36 GMT References: <1990Oct03.172748.18683@virtech.uucp> <3430@gmdzi.gmd.de> Sender: news@sunaus.oz Organization: Sun Microsystems - Australia Lines: 17 Posted: Fri Oct 5 11:00:36 1990 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit