Hazeltine 1200

[Allison]

>
>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