On Apr 19, 2013, at 10:29 AM, Bob Armstrong wrote:
5 bit is what radio amateurs call RTTY ...
5 bit code is Baudot (as in Emile Baudot, the guy who invented it). It
predates both ASCII and EBCDIC and was the standard for the wire services
way back when they used real Teletypes connected by leased phone lines.
I think it's more Telex (like telegrams), and selected other communications services like weather data transport that used 5 bit code. Wire services, as in the people feeding stuff to newspapers, were generally 6 bits rather than 5. The 6 bit codes came in many flavors (for example, the stock wire had its own code with lots of dedicated codes for different fractions). I did some work in the late 1970s on PDP-11 software for Typeset-11 that handled the interface between these 6 bit data streams and the 8-bit codes used internally in Typeset-11.
paul
Well,
Plenty of vintage computer collectors don't like to pay anything for their equipment, so I guess the two traits go hand in hand.
With regard to the original request - I'm actually thinking of the paper tape that the Pegasus computer in the science museum uses (or will use when the restoration is complete). That definitely pre-dates ASCII.
My cunning plan won't be worth nearly as much if I can't produce paper tape at the end of it.
Regards, Mark.
On Fri, 19 Apr 2013, Ian McLaughlin wrote:
On 2013-04-19, at 7:29 AM, "Bob Armstrong" <bob at jfcl.com> wrote:
- hams are poor
I don't know about poor, but we are definitely cheap :)
Ian VE7BST
(wow, there are a lot of hams on this list coming out of the woodwork)
On 2013-04-19, at 7:29 AM, "Bob Armstrong" <bob at jfcl.com> wrote:
- hams are poor
I don't know about poor, but we are definitely cheap :)
Ian VE7BST
(wow, there are a lot of hams on this list coming out of the woodwork)
5 bit is what radio amateurs call RTTY ...
5 bit code is Baudot (as in Emile Baudot, the guy who invented it). It
predates both ASCII and EBCDIC and was the standard for the wire services
way back when they used real Teletypes connected by leased phone lines. But
you're right - Baudot is the standard for radio teletype as well - hams are
poor and they bought all the surplus TTY equipment from the wire services
when they upgraded.
Although these days there are many ham digital protocols based on ASCII,
and most all hams have PCs. Not many actually use teletypes anymore...
Bob WU6V
On Fri, Apr 19, 2013 at 9:49 AM, <Paul_Koning at dell.com> wrote:
I suspect it's still made. I just read an article a few days ago about a place that was using punched tape communication systems.
5 bit is what radio amateurs call RTTY -- Teletype model 15 or model 28 stuff. You might try ham radio lists for this. Classic computer folks are more likely to have 8 bit (1 inch wide) tape.
paul (ni1d)
On Apr 19, 2013, at 4:11 AM, Mark Wickens wrote:
Hi folks,
I've got a crazy idea, so please humour me...
Does anyone have a length of punched tape they could send me? Ideally tape that is five bit, which is 11/16 inch wide I believe.
I'm presuming that there is nowhere to obtain paper tape anymore?
Thanks, Mark.
Hello!
Strangely enough at last years VCF I saw for sale a entire ream of TTY
paper. So yes ask on those lists. For myself I'd give a lifetime to
try and find a certain system...... But enough of that.
Dave not enough information there why Mark wants the stuff, but I'm
sure its your fault.
-----
Gregg C Levine gregg.drwho8 at gmail.com
"This signature fought the Time Wars, time and again."
I suspect it's still made. I just read an article a few days ago about a place that was using punched tape communication systems.
5 bit is what radio amateurs call RTTY -- Teletype model 15 or model 28 stuff. You might try ham radio lists for this. Classic computer folks are more likely to have 8 bit (1 inch wide) tape.
paul (ni1d)
On Apr 19, 2013, at 4:11 AM, Mark Wickens wrote:
Hi folks,
I've got a crazy idea, so please humour me...
Does anyone have a length of punched tape they could send me? Ideally tape that is five bit, which is 11/16 inch wide I believe.
I'm presuming that there is nowhere to obtain paper tape anymore?
Thanks, Mark.
Hi folks,
I've got a crazy idea, so please humour me...
Does anyone have a length of punched tape they could send me? Ideally tape that is five bit, which is 11/16 inch wide I believe.
I'm presuming that there is nowhere to obtain paper tape anymore?
Thanks, Mark.
Evening all,
I've accomplished a little project I've been working on for the past day or so on-and-off and it seems to be working now.
I've got the MUSIC/SP demo going and I've configured MAE (which is also going to be the HECnet<--->UUHECnet relay) to act as a "relay" to this instance.
To access it simply:
1). SET HOST MAE
2). Log in as MUSICSP (no password)
This will automatically connect you to the Hercules instance. The credentials are hecnet with a password of hecnet1. This SHOULD allow multiple users to connect at once...I've not tested this so let me know. Feel free to request an account.
Feel free to play around and send suggestions for improving the "relay"/issue reports my way.
Try sending an email to $000.
I might bring up a little windows box a bit later to run Sim390 so I can give TCP/IP to this...that would make the relay much more usable. I could also route email to/from HECnet/UUHECnet then.
--
Cory Smelosky
http://gewt.net/ Personal stuff
http://gimme-sympathy.org Experiments
On 2013-04-19 00:39, Brian Schenkenberger, VAXman- wrote:
Johnny Billquist <bqt at softjar.se> writes:
Under RSX, there is a task called IOX, which you can use to exercise the
I/O subsystems. It reads/writes to disks, tapes, terminals, whatever.
It's a rather good stress test of things.
Does anything similar exist under VMS?
Google for SYSTEST on OpenVMS.
Thanks, the mention of UETP by others also jogged my memory, and I'm playing with SYSTEST right now. Not 100% what I was looking for, but it might be good enough.
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
