Article 7495 of alt.sys.pdp10: Path: news3.best.com!news2.best.com!news.maxwell.syr.edu!newspeer.monmouth.com!uunet!ffx.uu.net!spool0.news.uu.net!reader2.news.uu.net!not-for-mail Message-ID: <38DBCE43.52D5273B@trailing-edge.com> Date: Fri, 24 Mar 2000 20:21:23 -0400 From: Tim Shoppa Organization: Trailing Edge Technology X-Mailer: Mozilla 3.03Gold (X11; I; OpenVMS V7.0 DEC 3000 Model 300L) MIME-Version: 1.0 Newsgroups: alt.sys.pdp10 Subject: Re: TPC format specs? References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 41 NNTP-Posting-Host: 63.73.218.130 X-Trace: reader2.news.uu.net 953947284 26753 63.73.218.130 Xref: news3.best.com alt.sys.pdp10:7495 Timothy Stark wrote: > > Hello Folks: > > I downloaded them from pdp10.trailing-edge.com but I am looking for tools to > extract files from tpc files for Linux platform. I found vmstpce software > but it is for OpenVMS system only. Or I am looking for tpc format specs to > write a tpc utility to extract files out of tpc tape files. The TPC format is easy - it's a way of representing exactly what's stored on a magtape. Two bytes give the length of the tape record, followed by the tape record. Repeat until end-of-tape. A tape mark is represented as a record of zero length. Two tape marks traditionally mark the logical end-of-tape. What's more complicated is the format used by TOPS-10 BACKUP or TOPS-20 DUMPER. I decode these using the DECUS freeware tools 10BACKUP and DUMPER, respectively, both available from ftp.decus.org, but these programs only run under VMS. They both deal automatically with TPC format files, as well as with real physical tapes on tape drives. The "individual files" on pdp-10.trailing-edge.com were extracted using these tools. For a Unixy box, Phil Budne has added TPC support to his 10backup utility. See ftp://philbudne.ne.mediaone.net/backup10.tar.gz in particular, the -c option handles TPC tapes. For TOPS-20 DUMPER tapes, I don't know of a Unixy utility for reading them. If anyone does know, I'm listening. -- Tim Shoppa Email: shoppa@trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927 Article 7507 of alt.sys.pdp10: Path: news3.best.com!news1.best.com!su-news-hub1.bbnplanet.com!news.gtei.net!logbridge.uoregon.edu!news3!budd From: budd@csa.bu.edu (Phil Budne) Newsgroups: alt.sys.pdp10 Subject: Re: TPC format specs? Followup-To: alt.sys.pdp10 Date: 25 Mar 2000 04:52:32 GMT Organization: Boston University Computer Science Dept. Lines: 23 Message-ID: <8bhgmg$c3t$1@news3.bu.edu> References: <38DBCE43.52D5273B@trailing-edge.com> X-Trace: news3.bu.edu 953959952 12413 128.197.12.3 (25 Mar 2000 04:52:32 GMT) X-Complaints-To: news@bu.edu Xref: news3.best.com alt.sys.pdp10:7507 In article <38DBCE43.52D5273B@trailing-edge.com>, Tim Shoppa wrote: >For a Unixy box, Phil Budne has added TPC support to his >10backup utility. It's Johnny Eriksson's program, I just dressed it up a bit! >See > > ftp://philbudne.ne.mediaone.net/backup10.tar.gz >in particular, the -c option handles TPC tapes. > >For TOPS-20 DUMPER tapes, I don't know of a Unixy utility for reading >them. If anyone does know, I'm listening. I just added it to my version of read20 (by Jim Guyton at Rand, Jay Lepreau at Utah). I merged in Stu Grossman's changes and added some options. Now available as; ftp://philbudne.ne.mediaone.net/pdp10/read20.tar.gz -phil