8 Dec
2007
8 Dec
'07
6:54 a.m.
Subject: Re: Hazeltine 1200
From: Dave McGuire <mcguire at neurotica.com>
Date: Fri, 07 Dec 2007 00:54:03 -0500
To: "General Discussion: On-Topic Posts Only" <cctech at
classiccmp.org>
On Dec 6, 2007, at 4:22 PM, Tony Duell wrote:
Of course it doesn't *need* to have a processor in the traditional
sense...I was just assuming that it would, as I was guessing it wasn't
much older than 1420 I had years ago. I could certainly be wrong.
It's much older than 14xx maybe at least two generations. Actually the
14xx series was near the end of the line for Hazeltine designs and I
remember being then for it in mid 78. By then they almost had the
15xx series working in production.
Allison
I'm also curious about what processor it's built around, if you
don't mind checking.
Why does it have to have a processor at all? A number of the older
terminals, both 'glass TTYs' and those with some limited control code
response, like cursor positioning, were built from simple TTL (etc)
chips. Sometimes the artchitecture was something like a processor (DEC
VT5x, for example), sometimes it was just random logic. -Dave
--
Dave McGuire
Port Charlotte, FL