From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,29f36805b9a20fe8 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-04-02 16:58:05 PST Path: supernews.google.com!sn-xit-03!supernews.com!cyclone2.usenetserver.com!news-out.usenetserver.com!sjc-peer.news.verio.net!news.verio.net!iad-read.news.verio.net.POSTED!kilgallen From: Kilgallen@eisner.decus.org.nospam (Larry Kilgallen) Newsgroups: comp.lang.ada Subject: Re: Streams in Ada Message-ID: <5FW3+dkM46AZ@eisner.encompasserve.org> References: Organization: LJK Software Date: 2 Apr 2001 20:57:34 -0500 NNTP-Posting-Host: 216.44.122.34 X-Complaints-To: abuse@verio.net X-Trace: iad-read.news.verio.net 986255856 216.44.122.34 (Mon, 02 Apr 2001 23:57:36 GMT) NNTP-Posting-Date: Mon, 02 Apr 2001 23:57:36 GMT Xref: supernews.google.com comp.lang.ada:6387 Date: 2001-04-02T20:57:34-05:00 List-Id: In article , Robert A Duff writes: > "Marin David Condic" writes: > >> The PDP-10 was more closely oriented to "Sixbit" characters. (Or >> "Half-ASCII" - basically ASCII with the lower case & some other stuff gone.) >> IIRC, the Tops-10 OS had the 6x3 file name restrictions basically because it >> would make filenames fit with Sixbit & into even multiples of machine words. > > This is more a property of Tops-10 than the PDP-10 hardware. > > The hardware supported "bytes", which could be from 1 to 36 bits each -- > there's nothing special about 6-bit bytes. 6-bit bytes were adequate to meet the needs of the time. As I recall, ITS (Incompatible Timesharing System), which predated Tops-10, used 6x6 filenames.