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

6 Dec 2007

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Subject: Re: Hazeltine 1200
   From: Dave McGuire <mcguire at neurotica.com>
   Date: Thu, 06 Dec 2007 10:33:17 -0500
     To: "General Discussion: On-Topic Posts Only" <cctech at
classiccmp.org>

On Dec 6, 2007, at 10:09 AM, Sridhar Ayengar 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 it is; sorta a predecessor to the 8051 family. 
Yes, and it can also address up to 4k of program either
internal (up to 2K for the 8049) and axternal.  It's possible
to hand external ram on it as well but the pointer is only 
8bits so larger ram has to be paged using IO pins.


Allison

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            -Dave

-- 
Dave McGuire
Port Charlotte, FL
Farewell Ophelia, 9/22/1991 - 7/25/2007