I believe that the 1602A is either a UART or a keyboard encoder.
Early terminals were built in one of two ways, either hard wired pure discreet TTL logic (such as the ADM-3) or as microprocessor based terminals, often with an 8008. Using a uP was much more expensive and was usually done only in very high end ASCII terminals or (almost always) in 3270 type terminals (connected to IBM mainframes via a coax cable interface).
Barry Watzman
----------
From: Sam Ismail [SMTP:dastar_at_ncal.verio.com]
Sent: Monday, December 14, 1998 10:12 AM
To: Discussion re-collecting of classic computers
Subject: Re: Keywords are not false advertising
On Mon, 14 Dec 1998, Tony Duell wrote:
> > I'm looking at the manual for this thing. It was a pretty righteous
> > terminal in its day. Maximum transmission rate is 9600 baud. It had a
> > video out so you could hook up an external monitor. According to the
> > schematic, the biggest chip on the I/O board is a TR1402A or 1602A (it has
> > both numbers written on it). I have no idea what this is. But there's no
> > 8008 in there. I think I checked it out when I first got it, and you
> > would've tried to get more than $10 out of me if it did I'm sure. ;)
>
> There are several terminals made by Beehive. Mine must be a later one -
> it has an 8008 in it (I am not sure what the UART is), a separate
> keyboard, but no joystick. Its main claim to fame is that it has a Hebrew
> character set in it as well as the normal one.
The one I have is circa 1974.
Sellam Alternate e-mail: dastar_at_siconic.com
------------------------------------------------------------------------------
Always being hassled by the man.
Coming in 1999: Vintage Computer Festival 3.0
See
http://www.vintage.org/vcf for details!
[Last web site update: 12/07/98]
Received on Mon Dec 14 1998 - 18:19:33 GMT