Hazeltine 1200

[Allison]

>
>Subject: Re: Hazeltine 1200
>   From: Mr Ian Primus <ian_primus at yahoo.com>
>   Date: Wed, 05 Dec 2007 11:43:14 -0800 (PST)
>     To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>
>--- Sridhar Ayengar <ploopster at gmail.com> 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.
>> 
>> Peace...  Sridhar
>> 
>
>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.

>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.


Allison


>-Ian