[GreenKeys] pdp 4 w/tty console ascii ? bcd? baudot? what say you Q

[Ed Sharpe Archivist for SMECC via GreenKeys]

ok I also found the MAINT   manual....
 
well and  out of  54  made...  there is still a  chance  one is in a 
barn.....( DREAM DREAM DREAM!)
 
thanks  for the  link  for  brochure   I will  display it  with our  table 
top  28KSR
 
ok  from the manual...
Keyboard/Printer and Control type 650 The Type 65 is a Teletype Model 28  
Keyboard and
Printer, with an input and printing speed of ten characters per  second.

Paper Tape Punch and Control Type 75. The Type 75 is a Teletype BRPE  
Punch, with an operating

speed of 63.3 lines or characters per second. It punches eight-hole  tape. 
However, the
punch may be modified to punch five-hole tape or  seven-hole tape, if 
desired by the user 0
 
 
In a message dated 7/20/2014 8:13:57 P.M. US Mountain Standard Time,  
captainkirk359 at gmail.com writes:

Darn, to  quote some internet fora I'd say I got "ninja'd" by Doug
Jones, and Jim  Haynes.

However I will confirm, the PDP-4 did use a 28KSR as its  console. A
copy of the September 1963 brochure for the machine can be found  on
BitSavers:  <http://bitsavers.org/pdf/dec/pdp4/F-41D_PDP4brochure_Sep63.pdf>


There  is pretty much no PDP-4 software out there any more, and
probably no  PDP-4's themselves. The SIMH project does have a PDP-4
simulator, which  runs on pretty much any platform under the sun
(Windows, BSD, Linux, OSX,  VMS...) although the lack of software is a
problem.

The DECsys-7  operating system of the PDP-7 was designed to work on a
PDP-4 for backwards  compatibility reasons (plus the machines are
related). And DECsys-7 does  run on the SIMH PDP-4 simulator (and PDP-7
simulator, naturally), however  it's not particularly usable on the '4.


Internally DECsys-7 stored  data using a six-bit code, which was
essentially standard  5-bit
Baudot/ITA2/USTTY/whatever-you-want-to-call-it code, with an extra  bit
to say whether the character is a FIGS mode or LTRS mode character.  It
could be run with 5-bit TTY's on the PDP-4, or ASCII TTY's on  the
PDP-7.


Links to the simulators and DECsys-7 software may be  provided if
anyone is  interested.


Cheers,
Christian


On 20 July 2014 20:54,  Ed Sharpe Archivist for SMECC via  GreenKeys
<greenkeys at mailman.qth.net> wrote:
>
>
>  ______________________________________________________________
>  GreenKeys mailing list
> Home:  http://mailman.qth.net/mailman/listinfo/greenkeys
> Help:  http://mailman.qth.net/mmfaq.htm
> Post:  mailto:GreenKeys at mailman.qth.net
>
> 2002-to-present greenkeys  archive: 
http://mailman.qth.net/pipermail/greenkeys/
> 1998-to-2001  greenkeys archive:  
http://mailman.qth.net/archive/greenkeys/greenkeys.html
> Randy  Guttery's 2001-to-2009 GreenKeys Search Tool:  
http://comcents.com/tty/greenkeyssearch.html
>
> This list hosted  by: http://www.qsl.net
> Please help support this email list:  http://www.qsl.net/donate.html




-- 
Christian M.  Gauger-Cosgrove
STCKON08DS0
Contact information available upon  request.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20140720/e0e69099/attachment.html>