Re: PDP-11 tape question

2020-06-24 Thread John Foust via cctalk
At 12:50 AM 6/24/2020, Chuck Guzis via cctalk wrote: >Thanks for straightening that out--all I know is that the tapes are from >an 11/70, which isn't much information, admittedly. A few months ago, I was re-rescuing some files that a friend had once read from a RSTS tape. He gave two sets of file

Re: PDP-11 tape question

2020-06-24 Thread Paul Koning via cctalk
> On Jun 23, 2020, at 9:57 PM, Chuck Guzis via cctalk > wrote: > > I've been processing some PDP-11 9 track (800 NRZI) tapes and run across > something that I don't recognize. > > Every file on the tape consists of a number of 512 byte blocks (okay, > that's normal) but at the head of each f

Re: Changing the number of file headers on an RSX volume

2020-06-24 Thread Kenneth Gober via cctalk
On Tue, Jun 23, 2020 at 9:03 PM Chris Zach via cctalk wrote: > So I'm working on this RSX11M+ system here and while working I ran > myself out of file headers. Using the HOME /MXF command I was able to > increase the number of headers, but only up to 4090. or so. Trying to go > to 4100 gave me an

Re: Future of cctalk/cctech - text encoding

2020-06-24 Thread Curious Marc via cctalk
>>> Peter Coghlan wrote: >>> Does anyone use ASCII anymore? >> >> I read and write my email with Emacs running in a terminal emulator. >> I rarely need anything beoynd codepoint 126. > > I vote we move the list to an Exchange server behind a SSL VPN and mandate > the use of Outlook, then forc

Re: Future of cctalk/cctech - text encoding

2020-06-24 Thread Peter Coghlan via cctalk
Someone whose name might be Marc might have written: Peter Coghlan wrote: Does anyone use ASCII anymore? >>> >>> I read and write my email with Emacs running in a terminal emulator. >>> I rarely need anything beoynd codepoint 126. >> >> I vote we move the list to an Exchange server behi

Re: Changing the number of file headers on an RSX volume

2020-06-24 Thread Chris Zach via cctalk
I did get an answer from Johnny B, and it makes sense why I couldn't figure it out: In order to increase the file handles significantly you have to either dismount with "dmo du0:/dev/lock=v" to lock tasks in memory then mount foreign and back it up or just put BRU64K on an RX01 floppy with VMRV

Re: Future of cctalk/cctech - text encoding

2020-06-24 Thread jim stephens via cctalk
On 6/24/2020 10:02 AM, Curious Marc via cctalk wrote: But I would strongly suggest that we limit it to using characters from the Baudot set. If not they don’t print right on my 1930 Teletype. I can peruse the list on my Teletype ASR-32(s).  Can archive the list with the 5 level paper tape (a

Re: PDP-11 tape question

2020-06-24 Thread Jon Elson via cctalk
On 06/23/2020 09:09 PM, jim stephens via cctalk wrote: Short story of crashing the 360 MVT system. We had IBM reels we reused which IBM used for patches called DTRs. they had 50 or 100' max length tape. We had a guy muck up a program to send a file off our system to the mainframe, and he

Re: PDP-11 tape question

2020-06-24 Thread Chuck Guzis via cctalk
On 6/24/20 1:23 PM, Jon Elson via cctalk wrote: > The 1052 Selectric console on the 360's were not on a channel, but > driven via direct I/O directly from the CPU microcode.  (Yes, the > console has a pseudo channel address that made you THINK it was on a > channel, but it actually wasn't.) One p

Re: PDP-11 tape question

2020-06-24 Thread Nigel Johnson via cctalk
Sometimes I had only lunch hour to do PMs, and one office worker always ate into my time because she had to 'finish something'. Pretty soon I found that [ 2 ; 9 y would put all ANSI terminals into continuous self-test, and that solved the problem:-) Those were the days! cheers, Nigel On

Re: PDP-11 tape question

2020-06-24 Thread Jon Elson via cctalk
On 06/24/2020 04:12 PM, Chuck Guzis via cctalk wrote: On 6/24/20 1:23 PM, Jon Elson via cctalk wrote: The 1052 Selectric console on the 360's were not on a channel, but driven via direct I/O directly from the CPU microcode. (Yes, the console has a pseudo channel address that made you THINK it

Re: PDP-11 tape question

2020-06-24 Thread jim stephens via cctalk
On 6/24/2020 2:12 PM, Chuck Guzis via cctalk wrote: On 6/24/20 1:23 PM, Jon Elson via cctalk wrote: The 1052 Selectric console on the 360's were not on a channel, but driven via direct I/O directly from the CPU microcode.  (Yes, the console has a pseudo channel address that made you THINK it