Hazeltine 1200 - test-drb@ccmp.vtda.org

6 Dec 2007

...

Subject: Re: Hazeltine 1200
   From: Sridhar Ayengar <ploopster at gmail.com>
   Date: Thu, 06 Dec 2007 10:09:00 -0500
     To: General Discussion: On-Topic and Off-Topic Posts <cctalk at
classiccmp.org>

Allison wrote:
    My father just rescued a Hazeltine 1200 from a
 scrapheap for me.  I know 
 nothing about these.  Could someone give me some
 pointers to 
 information?  Thanks.
  Nice! I don't know anything about the 1200, but I have
 a 1500 and a 1421. They are both just simple
 terminals, with some fairly basic control functions
 What does it look like? Is the keyboard integral or
 detatched? Does it look like the 1500/1400 series? -  
 The 14xx and 15xx are late 70s (after 1976) as 1500 used
 8080 and the 1400 used 8048 cpus. 
Interesting.  8048 is an integrated microcontroller, no? 
Yes but it has an external databas and addressing for extended
configurations.  Basically a subset of 8051.

Allison
...
    http://vt100.net/manx/covers/14/hi-1056a.png. 

 Now, if it looks like the 2000, you've got a great
 score. Those are some interesting beasts. I've never
 seen one, but they look like this.
 http://www.columbia.edu/acis/history/h2000s.gif

 The Hazeltine 2000 was a very early video terminal
 (circa 1972).  
 The 1200 was a basically glass tty, all uppercase
 (may have had a back pannel option for all upper
 tty mode or mixed) it was capable of slow baud rates 
 (I think to 1200 or 4800) and both RS232 or current 
 loop. I used on on the DEC PDP10 so that means it 
 was in house there by spring 1972.  It was all logic
 no cpu used and I belive it used serial PMOS shift
 registers for storage. 
Wow.  Neato!

Peace...  Sridhar 